I have a game when eating Smarties -- this is complicated, but I'll explain (it could evolve into a game show):
You have 15 Smarties in a little cellophane roll. Sort them by color, but then, before you can eat them, stack them in threes, with each little group of 3 a 'sandwich' (with matching colours on the outside, and a different colour inside). This takes a sustained effort, but it can ALWAYS be done. Never failed yet. If it fails, you just don't want it bad enough.
Have other food 'things' but none as fun as the Smarties game.
Okay, I'll tell one more . . . When I go to the movies, I always get a medium popcorn, (no yellow goo for those still in the US), and then a bag of M&Ms. Open the bag of M&Ms and pour them over the popcorn. Excellent. Love chocolatey and salty together.