Another pinner exclaimed: 28 Decorating Tricks To Brighten Up Your Rented Home (or college apartments) - I especially like the washi tape picture frames and the DIY photo wall. Nice DIY home decor list.
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.