If you have ever worked at a grocery store, you know there are some interesting combinations. I grew up in Lake Tahoe, and we could identify tourists by their shopping carts. (If the way they talked, dressed or walked didn't give them away.) For example, most ski bums had beer, bread, toilet paper and little else.
I knew someone who worked at a grocery store. She told me the funniest combination she ever saw was prophylactics and aspirin.
Here is your chance: write two shopping cart items that define a character. Peanut butter and grape jelly don't really give anything away--people eat that together all the time.
It can be random and cliched, or for a character in your current WIP.