Here's a cool way to use those useless 9 volt batteries you have cluttering up your junk drawer: Richard Lawson's 9Vo(l)tive lights. Turning any 9V battery into a small candle-like light that can be placed anywhere, they're a clever and eye-pleasing use of the chunky batteries. Scatter them about a flat surface for a cool soft lighting that doesn't need to be relit whenever a breeze comes through. They don't seem to be for sale anywhere, but you can get in touch with the designer by emailing him at richl[at]forpeople[dot]co[dot]uk and then get yourself hooked up with battery chic interior design.
— Adam Frucci

Via Core77