i've been using peanut lighters for years. great survival item. i carry one 24/7.

in fact, i was a member of the team that brought them to the usa back in 2007. here's the thread about it and how it all happen:
http://edcforums.com/showthread.php/42660-Can-any-recommend-some-good-keychain-sized-lighters

and a couple pixs i took of them back then: