My football fan buddies are kinda outta control with their bets, so every time I have 19 completely drained gift cards I buy another $100 one and throw them all in a hat. $10 each gets them a chance to pick a card, any card. At first I thought I'd need to invite 20 of them over to the house but they're so bad at math they love to play multiple times per person.

Near Christmas time, I'm so generous I'll leave $15 or so on one of the bad ones instead of completely draining it.