One of my favorite cereal prizes was a set of trick playing cards that I got from a box of Rice Krispies as a kid. Normally, playing cards are mirrored on the diagonal, but a few of these ones had entirely different suits on the other end, allowing you to fan the deck on both sides for different hands on each. I don’t think I ever pulled off any of the recommended tricks with those cards, but it was nice to know ol’ Snap, Crackle and Pop had my back if I really needed to win a poker game through any means necessary.