These free printables from Fun with Mama are great for use as sorting cards (sort veggies from fruits, sort colors, etc.)
I plan on using them (along with old supermarket ads) for favorite foods collages, as well as for tie-in discussions ("Who here likes to eat carrots? Can we think of any other animals besides humans who might like to eat carrots?...")
If you make two sets, you could easily turn the cards into a foods version of the classic memory match game.
These would also make wonderful scavenger hunt cards for trips to the grocery store/farmer's market (just hole-punch the cards and slide them onto a key chain loop for easy-to-carryness.)
Hmm...Now I want to make a salad...