Drinks, i would do juice, tea, coffee, punch, def champers - guava juice is so yummy with bubbly

Fruit salad kebabs are a good idea as its less messy than just peices, use paddle pop sticks
Piklets
Savoury and sweet muffins
Cold/room temp frittata or zucchinni slice
Banana bread
Fruit cake or thick cut bread
You could make scrolls (or buy them) like the bakery ones with cheese + vegemite for the kiddies or olives and pesto etc for the adults.

I am a personal believer of choosing a few really tasty things and having plenty of them rather than having the trouble of making heaps of different things and running out of the favourites.

Hope you have a great day