As I told you before I work at a school. Today when I was out at the schoolyard when the children had a break, I found some of my pupils (about 10 years old) in the forest behind the old school-building. They wanted to show me what they have been building. A sentimental but also happy feeling got in to me because I went back 35 years and remembered myself building exactly the same things with stones and branches. Sometimes it happened that there were some other builders near that took a special stone or perch from us - and that wasn't popular!
I think it's so fascinating that children do this things nowadays even if they have so much toys and other things to play with.