Both a very cool gadget and a serious fire hazard, these cufflinks are fully operational miniature petrol lighters.

Very cool indeed, although the manufacturers do say that you have to remove the cufflinks from “any clothing” before using them, and I think that’s the downfall.  Not only would it be a royal hassle to light a cigarette, you’re also clearly going to think you know better and end up running around a dinner party shouting “Help!  Help!  I’m on fire!”.

Still, they’re gorgeous even if you don’t use them, and available for $80 from the Cool Material shop.