It looks like it was built by elves, or hobbits!
There is a theatre.
And a little world. Maybe for the elves or hobbits.
Complete with furniture. And check out the hammock!
This is my favorite. It is something you could do at a preschool - it is a display frame for nature collections or nature art.
Just a simple wire frame - but so beautiful.
All of these images are from a blog I have just discovered. It is called Kleas, and has loads of wonderful craft ideas for preschool age children - why not head on over and have a look?