The MouthOff app for iPhone synchronize a comedy mouth to your voice. 100% useless, 200% fun, 300% wanted:

I found this one on gadgetophilia.com and could not resist. It’s simply not possible to describe it, so here’s the picture:

The Optimus Maximum keyboard from Art. Lebedev Studio has one miniature screen in each key, showing exactly what it is… It usually displays small caps, but if you press “Shift”, all keys turn into big caps. If you’re using special applications like Photoshop, Half-life via the keyboard, you can display icons directly in your keyboard!

I [...]

This toaster available from the Star Wars Shop burns a Darth Vader picture into your toasts:

When time has come to wake you up, the flying alarm clock will start and launch a propeller while starting a terrible noise. The only way to stop the noise is to put the propeller back in place, forcing you to stand-up, search it, and bring it back. No way you’ll stay asleep.

The flying alarm [...]