My six year old is forever running around the garden shooting his little brother with gun sticks. This is despite the fact that his toy gun collection would equip a small army. But his favourite 'gun' is the one he made by taping the ladder from his fire truck onto a toy golf club.

But I was the same, never built a tree house though. We were too poor to have a tree in the garden!

I would reject the notion that kids nowdays don't play outside much. My two run wild outside all the time. Their latest habit is to sit on the garden wall greeting passersby.