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.
Martha Stewart Home & Garden ~ Make a ladybug habitat ~ Lady bugs are a natural pest control. Keep more of them around by filling a long tube with sticks. The lady bugs will make it their home and watch over your garden.
DIY Outdoor Solar Light Display : 2 fence posts + 4 solar outdoor lights + 8 extra long screws + an long scrap of treated x wood. great idea for the deck or patio! Would probably use nicer solar lights!