If you have a vinyl cutter, you can make your own (like Cuckoo4Design did). But if you don't, you can get 60 similar removeable Swiss crosses from Walls Need Love for $16 — or 36 feet of subtle 5-inch stripe tape for $48.
7.And customize your kitchen backsplash with bigger sheets of removable contact paper.
Aaaand you could use Command Strips to attach the Velcro to the mirror, so it doesn't leave residue when you move. (I promise they don't pay me. They're just really useful for renters.) From Coop Crafts.
9.For extra privacy that still lets in the light, paste lace, fabric, or paper over your windows using cornstarch and water.