Elf house on a tree! That would be cute in the garden, especially in the tree over grown with ivy. How about some battery tea lights in the windows during outdoor parties. I hear the fairies/elves whispering "home school project" in my ear.
i'm not kidding, playing on the playground can really be fun to me, esp. certain kinds - great slides, wonderful merry go rounds lol reminds me of having fun with maribeth and leon. this slide looks like wonderful fun.