This idea came about when one of my globes (I have a rather large collection) came crashing down off the closet in the entry. I came home from hauling the girls around to find the globes pieces neatly stacked on the bench.
After calling hubby at work to make sure it hadn't hit him on the head I began to wonder what to do with the hemisphere that seemed intact (turns out it wasn't very intact, it had many cracks which means I couldn't use it). I decided to use it for a lampshade. The globe that fell would have been an awesome lampshade - it was a plastic globe and the light shone through it beautifully.
I discovered that all the rest of my globes are cardboard. I think when I am at thrift stores that I will check for plastic globes and make another one of these sometime.
Tutorial at Suite101.
You can find more ideas for refashioning lamps on my Lamp Refashion Tutorials.
While I am sharing from my globes, I like maps too. Years ago, my parents bought two old chalkboard maps for me when a school near them closed. I used one of them to make a window shade.