KnockKnock is a Polish chain of hands-on DIY and technical-craft workshops for children — from toddlers accompanied by a parent up to school-age kids and teens. What sets it apart is that children use real but child-safe tools (hammers, hand saws, screwdrivers, drills, measuring tapes) and natural materials like wooden boards, sticks, nails, screws and plaster bricks. Every session they build a take-home creation following the brand's own step-by-step instruction system, quietly learning maths, engineering and STEM thinking. Programmes are tiered by age — parent-and-toddler creating, brick-building, junior DIY and a 7+ tier.