1 or 2 containers of pineapple sherbet (pineapple raspberry is really good)
1 or 2 bottles of ginger ale
Canned pineapple with juice and a little water frozen in a ring

Mix 1/2 container or more of sherbet to a bottle of ginger ale. It's better when creamy. Put the frozen pineapple in and when it starts to melt you also have chunks of pineapple in the punch.