Man, I really want this for Xmas, but I already have too many time-wasting addictions. <iframe width="420" height="315" src="http://www.youtube.com/embed/Hhg9v2WYFxA" frameborder="0" allowfullscreen></iframe>
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This is different, and shows what is inside, and how it works. <iframe width="420" height="315" src="http://www.youtube.com/embed/z22vnzKtq1Y" frameborder="0" allowfullscreen></iframe>
Can't find the wood one that I posted. But, I'm finding one for $30, plus an optional $5 upgrade kit to make it look cooler. http://www.solarbotics.com/products/60005/ and another http://frivolousengineering.com/?page_id=1568 The second one as an option requiring on a phillips screwdriver, and a cheaper one where you do your own soldering and a 3rd option which is just the electronics as a kit, so you could build a would box yourself.
Someone should design one in the shape of a trapdoor spider's nest. Decorate it like a spider terrarium, decorate the switch to look like an insect. You could play a really good gag where you tell a buddy, "Hey I'm gonna feed my spider. Wanna see?" Act like you got an insect in your hand, open the case, "flip" the switch, and see a giant menacing trapdoor spider come to try and shut off the switch. <iframe width="420" height="315" src="http://www.youtube.com/embed/ySXCdcnKBgg" frameborder="0" allowfullscreen></iframe>