how about mini meatballs? Mini pizzas are a good idea too.

Also, fruit and marshmallow kebabs. Strawberries, watermelon and marshmallows on kebab sticks.

I remember one thing that my mum did all the time for our parties. Put icing on a plain biscuit, like arrowroot or something similar, then put smarties on as eyes, jelly snakes or beans as a mouth. Can do different colour icing for hair. I remember them being very yummy!