Work only with numbers today. You could make an image using numbers, make something into number shapes, do something involving a calculator, or ...?
I played in a one-day ultimate tournament today, and originally thought about doing something involving people's numbered jerseys. Unfortunately, i forgot... oops.
Back home later at night, a friend unexpectedly stopped by. We hadn't seen each other in quite a while, and I decided to commemorate the occasion by having us each make half of this little zero. Yes, that's my creative book in the middle :)