It’s tax evasion time and in your panic to fudge those numbers you just might need a calculator. Here’s a nice looking water powered model that uses water or any type of electrolytic liquid for power.
$19.99 @ computergear.com
gaiam.com has a more traditional looking water powered model for $26
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This thing is cool since you don’t need any buttreys to power it and it has a nice shape too..:)