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.
Build a unique DIY hose holder using recycled pallet wood! This holder has a special feature; you can plant your favorite flowers on top. This free standing holder is great for the garden or front yard (add to your curb appeal!