Not sure what type of food you are looking for or type of workplace, but:
Coconut ice
ham and pineapple pinwheels
lifesavers (meringue looking rings filled with cream and jam
sunken subs- hot dog rolls filled with canned spag, ham and cheese
popcorn peals- toffeed popcorn strung as 'pearls'
fish bites- crumbs mini fish pieces and dipping sauce
frozen banana bites- banana thirds dipped in melted choc and nuts on a postick
beach baby jellies- cupcake papers filled with jelly (water), crumbed biscuits (sand), jelly baby (on the beach), a lifesaver lolly and a ****tail beach umbrella (My Fav)

These are all from a kid's party book I have so if you want more details of any let me know.