Well, I looked around my junk pile to see what I could combine for a new project, and what I found was an old globe and a wall thermometer that was perpetually stuck on 80 degrees. Seemed like a good combination for a project!
What I did was use the bezel of the thermometer as a frame, and inset half of the globe into the frame and made it into a clock. I also discovered a good use for the other half of the globe, which I'll get into in the last step.
Step 1: Cutting the Globe & Adding the Clock
I began by cutting the globe in half at the equator. Since sawing cardboard would produce a pretty jagged edge, I simply used a shop knife and kept scoring around the equator until the globe was cut in half.
I drilled a hole in the end (North Pole) and mounted a quartz clock movement. I guess I could have stopped here and just mounted the globe clock on the wall, but I wanted to make use of the old thermometer housing.