Everything parents need to know about building dens and forts with young children, from first blanket caves to garden adventures, grounded in the science of play.
Den and fort play is, at its simplest, the act of creating an enclosed, child-scaled space using whatever materials are to hand, and then inhabiting that space with imagination. There are no formal rules, no winner and no prescribed ending. A sofa cushion propped against an armchair counts. So does a bedsheet draped over a clothes airer, a cardboard box turned on its side, or a willow wigwam in the garden. What matters is that the child feels ownership of the space: that it is theirs to enter, decorate, defend and daydream inside. For children under five, that sense of ownership is enormously powerful, and it explains why den-building tends to produce a quality of absorbed, joyful concentration that many other activities simply cannot match.
If you are wondering whether there is a right way to do this, the honest answer is: not really. The adult's role is to make materials available, offer encouragement, step back generously, and resist the urge to tidy up too soon. The child does the rest. Research consistently shows that self-directed, child-led play in enclosed, cosy environments supports language development, emotional regulation, spatial reasoning and creative thinking, all at once, without a lesson plan in sight.
The evidence base for den and fort play is rich, and it draws on some of the most respected voices in child development. Alison Gopnik, whose research into the learning minds of young children has reshaped how we understand early childhood, argues that children are not empty vessels waiting to be filled with knowledge but active, curious scientists running their own experiments. Choosing where to put a cushion, testing whether a sheet will hold its shape, deciding who may enter a den and who may not: these are genuine cognitive acts, repeated hundreds of times in a single play session.
What the research tells us
Jaak Panksepp's foundational work on the SEEKING system in mammalian brains identified play, particularly exploratory, self-motivated play in enclosed or novel environments, as one of the primary drivers of healthy emotional development. For young children, a den is not merely a fun distraction. It activates the very neural circuits that build resilience, curiosity and a sense of self.
Lev Vygotsky's concept of the zone of proximal development is equally relevant here. When a child builds a den, they are constantly working just beyond their current competence: stretching to reach a shelf, negotiating with a sibling about the layout, or figuring out why the roof keeps collapsing. A gently present adult, ready to offer a quiet suggestion but not to take over, embodies the scaffolding that Vygotsky described. Jean Piaget, too, would recognise den play as the ideal theatre for symbolic and constructive play, the developmental stages that dominate ages two through five.
Peter Gray has written compellingly about the role of free play in building children's capacity for self-regulation. A den, precisely because it belongs to the child, gives them a rare and genuine opportunity to practise being in charge.
The short answer is: less than you think. The most effective den materials are soft, lightweight, adjustable and available in most homes. Begin with a collection of old bedsheets and pillowcases in various sizes. Add sofa cushions, sturdy chairs placed back-to-back, a clothes airer or two, bulldog clips or dressing-gown ties to secure draped fabric, and a torch or battery-powered lantern for atmosphere. Cardboard boxes, particularly large appliance boxes, are as close to ready-made forts as the natural world provides.
Outdoors, the principles remain the same: look for natural anchors such as fence posts, garden chairs, low branches or a washing line. A large tarpaulin or weather-resistant picnic blanket makes an excellent canopy. Pegs and bungee cords, kept safely out of small hands except when supervised, extend what is possible considerably.
Once a den is built, the question becomes what to put inside it. This is where a thoughtful selection of open-ended toys makes a substantial difference. Plastic toys with fixed functions tend to dominate the child's imagination rather than serve it. Wooden toys, by contrast, invite projection: a wooden block becomes a telephone, a loaf of bread or a sleeping dragon depending entirely on what the child decides.
Open-ended play and language
Kathy Hirsh-Pasek and Roberta Golinkoff, whose decades of collaborative research have examined how children learn through play, consistently find that the richest language and cognitive gains occur during child-directed symbolic play with simple, open-ended objects rather than with single-purpose electronic toys. A wooden bowl inside a den becomes whatever the story needs it to be.
Stocking a den with a small basket of wooden animals, a set of stacking cups, some natural wooden blocks or a simple board game creates a self-contained world that can sustain play across multiple sessions. For outdoor forts particularly, traditional garden games introduced at child-appropriate distances add a wonderful physical dimension: rolling, aiming and gentle competition all emerge naturally.
Explore Jaques London wooden toys, crafted for open-ended, imaginative playIndoor dens thrive in winter, on rainy afternoons and in the quiet hour before dinner when energy is high but going outside is not practical. The kitchen or sitting-room floor becomes the building site. The den offers a contained, cosy alternative to the whole house, which helps children who are prone to overstimulation to settle and focus.
Garden forts introduce a magnificently different sensory palette. Richard Louv, whose work on nature-deficit disorder has influenced early years policy internationally, points to the particular value of play that happens in fresh air, on uneven ground and in shifting weather. Even a modest outdoor fort, built against a garden wall or beneath a tree, connects children to textures, sounds and light conditions that no indoor space can replicate.
Discover Jaques London outdoor games, designed for garden play across every seasonInside a den, children practise perspective-taking, the ability to understand that other people have different viewpoints and desires, because every small negotiation about where to sit or what the den is pretending to be requires them to consider another person's experience. Jeffrey Trawick-Smith's longitudinal research on play quality consistently identifies sustained pretend play as among the strongest predictors of later social competence.
Sensory exploration is equally present. The dim light inside a blanketed den, the sensation of crawling across cushions, the muffled quality of sound, the warmth of a torch beam: these are rich, low-risk sensory experiences that help young children build their proprioceptive and interoceptive awareness, an unglamorous but vital foundation for self-regulation.
Drape blue and white fabric over chairs arranged in a long rectangle. A cardboard tube becomes the telescope; a wooden bowl is the ship's wheel. Fill a small bag with wooden coins or smooth pebbles as treasure. The child decides the destination and who makes the crew.
Use a large cardboard box as the keep, cutting arrow-slit windows with blunt scissors while the child watches. Surround it with cushion ramparts. Wooden animals become the residents. A torch placed inside glows like a great-hall fire. The child is, naturally, the sovereign.
A low table covered with a cloth and pushed into the corner of a room becomes a shop. Fill it with wooden fruit and vegetables, stacking cups and small boxes as goods. A grown-up plays customer, then steps back as the child takes both roles. Language flourishes here: prices, requests, negotiations, thank-yous.
Completely normal, and worth celebrating rather than correcting. For children under three, the act of building and demolishing is the play. The collapse is not a failure but a satisfying physical event in its own right, one that teaches cause and effect more directly than many toys designed for that purpose. Try building something simple and robust, such as two chairs with a sheet draped loosely between them, and narrate what you are doing as you go. Over time, the child's interest in inhabiting the space rather than dismantling it will grow naturally, usually somewhere between the ages of two and a half and three and a half.
Children as young as twelve to eighteen months enjoy being placed inside a simple enclosed space, a large cardboard box with the flaps open, for instance, and will explore it happily for short periods. Between two and three, children begin to direct the building process themselves, pointing at where they want things, carrying cushions purposefully and showing clear preferences. From three onwards, narrative and role-play emerge strongly: the den becomes a spaceship, a bakery, a hospital. By four and five, children often sustain elaborate, multi-session stories and begin negotiating complex social rules about who may enter and under what conditions. Each stage is valid and rich in its own way.
Join in, wholeheartedly and without guilt. Vygotsky's scaffolding principle applies beautifully here: a warm, responsive adult who follows the child's lead inside the den enriches the language, the story and the emotional safety of the play far more than stepping back would. Dana Suskind's work on the importance of adult verbal responsiveness in early childhood is a useful reminder that being present and talkative with young children, even in play, has measurable long-term benefits. That said, you can gradually reduce your active role over weeks by becoming a quieter presence, the listening audience rather than the co-star, until the child finds their footing with independent play naturally.
Entirely, and sometimes the constraints of a small space make for the most inventive dens of all. A single armchair with a sheet thrown over it creates a cave. The space beneath a desk, lined with a folded blanket, becomes a bear's den. A pop-up laundry hamper with the lid removed is a ready-made tower. The principle that matters is enclosure and ownership, neither of which requires square footage. If outdoor play feels limited, a periodic trip to a local park with a picnic blanket and a bag of wooden toys can provide the fresh-air dimension that complements indoor den play so well. No garden required.
Britain's oldest toy maker. Every toy open-ended, wooden, and built for exactly the kind of play the research recommends.