What can you do in a dark room with nothing but a camera and a torch?

Photos made by placing a Nikon D50 on a stable surface, setting the control to fully manual, f-stop to the lowest setting (5.2), shutter speed from 5 to 15 seconds (depending upon the desired effect), and the auto-timer used to enable hands-free activation and time to setup. The “torch” can be a headlamp or pen light, preferably with momentary on/off function.