I have compiled a list of several snack or meal ideas for various themes and holidays. These mostly fit well for preschoolers, but of course, not all of them will be appropriate for your kid, and some are almost definitely adult only. Clearly, they're not all healthy either, so, pick'n'choose to what suits your purpose.
CANDY:
- swedish fish
- gummy bears- red only
- gummy worms- red only
- hot tamales
- licorice
- jolly ranchers
- fireballs
- Gushers
- Fruit by the Foot
- red bell pepper
- strawberries
- cherries
- raspberries
- red apples
- grapes
TOMATO SOUP
JELL-O
MARINARA SAUCE
SALSA
KETCHUP
COCKTAIL SAUCE
FRUIT PUNCH
KOOL-AID
STRAWBERRY SODA
STRAWBERRY JELLY
TRIX or FROOT LOOPS, red only
KIDNEY BEANs
FIERY CHEETOS