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.
This gave me an idea-- we could use posts around our patio-- attach hanging hooks as shown-- but also drape string lights between! Maybe string lights along the deck into the trees for the backyard can all be lit up