I saw this setup over at a friend’s house: He has a lamp on his nightstand that’s situated so it’s a pain to turn on or off, but he rigged it with this Good Earth Lighting Kit so at the end of a long day he can dim it or turn it off, just by touching a 2″ touch-sensitive pad.
The kit allows you to dim a 120V incandescent or halogen fixture to three light levels, and it includes the dimmer switch, transformer, and all the necessary hardware. While the instructions are vague with horrible typos, the process is pretty straightforward — trim the cord to the right length, mount the dimmer, and plug the lamp in. It also looks like you can attach the pad wires to any metal object and use that as the switch instead.
The kit will run you about $15.