M.V.
A great game for all ages is "pass the parcel". You wrap a small price in gift wrap, then you cover with a layer of newspaper and then another. In between these layers of newspapers you add little prizes along the way - so that the parcel is big. Then, you sit all the children in a circle and play music. They need to pass the parcel around and then when the music stops, whoever has the parcel takes off one sheet of paper and so on and so on.
Plus, a friend of mine put little numbers in balloons and kids had to pop the balloons and collect their numbers for a lucky draw.