Let's face it. Even though they are obligatory at weddings and all manner of black-tie events, cufflinks are straight-up useless.
The stainless steel clasp that holds your usual your cufflinks in place also double up as a flint to light cigarettes and cigars, impress partygoers, commit arson, and so on.
They are small, and so the refillable reservoir can only hold up to about 50 lights. So use it sparingly.
The only catch is that it has got to be pretty goddamn annoying to undo your cufflinks every time you want to spark up. Putting them on is hard enough.
These "lighter cufflinks" are available through Uncrate Supply for $70.