Here's a fun picture idea:
Set your camera shutter speed to something reeaaallllly high and use a laser pointer on a wall to make laser pointer art!
My camera doesn't have an actual shutter speed setting (GRRRRR!) so I have to use a pre-set that only makes the shutter speed like 2-3 seconds. It doesn't really give me enough time to do anything at all but whatever, I can still try.

Random design made from messing around.

Attempt at a smiley face.