Do it yourself

Hi! Hope someone can help me! My husband and I are about to move into a 50 year-old rental house. It has seen better days. We want to feel good about living there, but don't have the resources or energy to invest a whole lot of time & money into it. Anyway, main problem we are facing is that there is no cover over the bathroom light fixtures. They are on either side of the medicine cabinet, on a square pedestal-like wall fixture. Any ideas as to the sort of material from which i could make a makeshift shade or similar ? thanks! k