Glenn Ashmore writes:

It was just a lark. One of the flow meters I bought on eBay for the
watermaker project came with this weird contraption still attached. It
was a pair of water cooled heat sinks with a pair of Peilter chips
sandwiched between. I played with it a couple of times and it sat on my
work bench for a month before I had this revelation. I dug out a chunk
of aluminum scrap, set up a fly cutter to the diameter of a beer can and
milled a semicircle down one side so the can would be in good contact.
Carved up a block of scrap Divinicell the same way for insulation and
covered it in glass/epoxy.

A friend of mine got a pile of peltier elements somewhere and did a few
experiments with them. The 'coolest' system was a lid for a cooler box,
fitted with what I remember was 6 BIG peltier elements. The thing took up
so much power that he fitted an old lawnmower motor with an alternator to
keep the beer cold. At the local festival people loved his cold beer but
were not too fond of the noise

A few pictures of the experiments (including an one-bottle version) can be
seen at http://mikavanhala.com/venesivut/kylmakone/

Pekka
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http://www.puuvene.net/