If you want to give your home an instant touch of geek heritage, Nintendo-master Bryan Duxbury has come up with the perfect item: the Super Mario Question Mark Block Lamp. The bottom of the lamp is actually capacitive-touch sensitive, so when you punch it Super Mario Bros style, the lamp toggles its light and plays the classic coin sound. While no coins come out of this one, anyone coming over your house will know immediately how to turn it on.
As Bryan explains:
The outside is made of laser-cut plexiglass, while the guts are a custom-milled PCB full of LEDs and an ATTiny microcontroller. It was really fun and rewarding to figure out how to use an ATTiny in place of a full-blown Arduino -- I definitely recommend people consider using those controllers for their permanent projects.
If you want it -- because you know you do -- completed lamps and self-assembled kits can be found on Bryan's Etsy store.