I generally make Ants on a Log with peanut butter and raisins, because that's what we have on hand, but any nut butter (or even cream cheese?) and dried fruits could be substituted. The kids love helping to make these too, especially arranging the "bugs" on it.
Ants on a Log
1/2-1 cucumber per serving
Peel cucumber and cut long-ways down the middle. Scoop out seeds and pat dry. Spread peanut butter in the seed cavity and top with raisins as desired.