It has recently been mentioned in a review but I'm going to mention it here in case anyone is still interested in performing this effect. It appears as though normal size Tic Tac boxes are no longer sold in most stores. They now seem to sell only the Big Packs. It's been brought to my attention that the original sized boxes can be found in some dollar stores. Or if you're really dedicated, you can buy the normal sized boxes in bulk for fairly cheap from Amazon or the like. So hopefully this helps you to some degree. It's a free effect. And yes... I'm a weird person, if that hasn't been said enough on the reviews. I have no shame.