A simple, standard size Bic lighter case with the shape of Minnesota punched right through it. A lighter with or without the sticker fits pretty snugly inside.

This second version has the shape of Minnesota facing the correct way on both sides, as well as an additional variation with a heart in it.

With the settings below it only uses about 3m of filament and takes about an hour and a half. It's a great thing to print if you need to use up the last of a roll.