I second the suggestion of the half-sized disposable lighter. The amount of instant, convenient flame you get for the size, weight and cost is un-'matched.' <br><br>I prefer the Bic pocket electronic version because it works after being submerged, it has a child safety lock that prevents the butane from accidentally being released in your pocket, and it has a very smooth, pocket-friendly shape. No shower of sparks, though.<br><br>It's not intended for carry on a keychain, but you would be hard pressed to find anything much smaller. <br><br>