We've a DS who is 4 and one of those children who loves hiding in nooks and crannies and in bushes etc. He'd absolutely love a treehouse, but we don't have the garden for that! However we've a bit behind the shed that I think we could turn into a bit of a secret hideaway. DP is very skeptical, but happy for me to do whatever I want as it's not an area that can be seen from the house.
This is the area. I currently don't like him playing there because of the gap by the shed, so I've got as far as getting someone round to quote for making the surface level (probably paving stones for ease of maintenance). I thought some solar lights, blackboard paint on the shed, maybe some of that camo netting that would need to be pushed aside to enter it. I'm worried it might be incredibly lame though... It is a small space, roughly 2m by 1m.