Chopsticks. Use them. It takes a little practice, but they are perfect for snacking, especially popcorn. Cheetos are easiest of the chips, but others are possible. No more residue on your finger tips, or the backs of your hands from reaching into the bag. I also switched to chopsticks for things like salads (fruit or vege variety), noodles, and getting olives and such out of jars. Even a good stew or chili can be eaten with chopsticks and a spoon. Now I just need to get better at using chopsticks with my nondominant hand.
Hedwig sings a song about this myth, Origin of Love.