large childrens wooden playhouse wendy house play castle | eBay
Modern playhouse DIY project
DIY Kids Fort which could be readily altered to make a nice LARP or Ren Faire building.
child friendly garden ideas - Google Search
Awesome play area for littles - pic only
I would use this idea with children to allow them to explore different shapes and objects and how they all interact.
DIY Water/Sand Table for Toddlers and Preschoolers: Made from Recycled Materials
Kids water play toddlers sensory