[Metalab] led throwies with biobatteries

[Bernhard Kuemel]

On 11/23/2010 11:20 PM, Michael Bauer wrote:
> On Tue, Nov 23, 2010 at 10:50:19PM +0100, Bernhard Kuemel wrote:
>> On 11/23/2010 09:45 PM, Sven Guckes wrote:
>>> * Damian Stewart <damian.ml at frey.co.nz> [2010-11-23 14:31]:
>>>> well, it still just _feels_ wrong
>>>> to go and throw batteries around...
>>>
>>> biodigradable batteries, anyone?
>>> now *that* would cause a craze! :)
>>
>> Stick some copper and zinc in a lemon. Copper is harmful to the
>> environment, though. A graphite rod might do instead.
> 
> Do we have to use imported fruits? Just think of the carbon footprint!

Local vinegar probably works, too.

A Zamboni pile might work for centuries. Bit bulky for a throwie, though.