The 9 volt battery lamp is artist Richard Lawson's entry and winner of last year's lighting company Mathmos' design competition.
The lamp mirrors the form of its power source, a standard 9 volt battery, which it simply clips on to. Stand it up and it lights up; lie it down and it switches off. Each lamp comes with a Duracell battery promising 70 hours of light.
http://www.creativereview.co.uk/crblog/stand-me-up-turn-me-on/ [Yes, this was everywhere on the Net last year, but better (severely) late than never!] | Mathmos website - Thanks Patrick Burgoyne!
Previously on Neatorama: Mathmos' Ice Candle