Wow! I see you've gotten some great responses.
My favorite punch recipe is equal parts white grape juice and ginger ale. It tastes great and it doesn't stain! You can add sherbet or strawberries on top for a festive look.
Another easty party pleaser is a brick of cream cheese softened to room temperature. Pour a jar of picante sauce or salsa over the cream cheese and serve with chips or crackers. It's very easy and makes a pretty presentation.
For something sweet, my girlfriend took square Little Debbie cakes of various flavors and cut them in fourths and served them on a nice platter. They looked like little petit-fours. It was economical, cute and tasty. It was a great idea that I plan to use at my next party.
It looks like you've gotten some great ideas from Mama friends! Good luck and have FUN!!!