The Koornwinder Kard Kontrol beats the breather any time... in my opinion. I never own a deck without it.
To make: Take a picture card, lay on table face up.
Mix up some epoxy resin glue and put a minute dab on each corner of the frame line, and then a little bigger dab in the dead center of the card.
Make sure it is REALLY DRY before you add it to a deck of cards.
You can't miss.
You can have spectator's cut the deck and more often than not they will cut to it.
Many many appliations possible. :cool: