Motion Sensor Ideas and Uses

Hi, I stopped by the hardware store recently and picked up a decent motion sensor that switches on its attached 220v socket for two minutes when it senses movement. Pretty neat, right? There are lots of possibilities. The first thing I thought of was connecting either a Hitachi Magic Wand or an orbital sander to it, using them to please or torture me whenever I move around. But surely there are other fun uses as well. I just can’t quite find the inspiration for this specific device… Any suggestions? I also grabbed several timer sockets, including a digital one with a random mode. However, that random function is a bit lacking since it isn’t configurable. It stays on for 10 to 26 minutes and then turns off for between 26 and 43 minutes… not very useful. I have an analog timer too, which has 15-minute intervals (configurable for being on or off). Do you have any ideas what to plug into it?