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.
Do you have fruit trees that used to fruit well but are no longer producing much or any fruit? Perhaps your vegetable garden isn’t as lush as it once was, with fewer vegetables or smaller, misshapen ones.