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.
58 Ideas That Will Beautify Your Yard (Without Breaking the Bank)
Adding pavers around a standard concrete walkway can give your entrance a little something extra. And so much less expensive than redoing the whole thing. This would look great for our front walk way when we do finally get our sidewalk poured.