Ants on a log
Celery
peanut butter
Raisins
Put peanut butter on celery, and sprinkle with raisins.

Smiley Rice Cakes 
Rice Cakes
cream cheese  (different flavors depending on what your fruit or veggie is)
fruit (any kind will do.  Make funny faces with the fruit)

Monkey Sandwich

banana
peanut butter
honey
hot dog bun

Spread peanut butter on hotdog bun, put banana on like a hot dot, drizzle with honey, and add some sprinkles.