You will need:
I use Chips Ahoy
cookies because they are a pretty strong cookie which can withstand the process of making the Chipwich. They also taste great. However, homemade cookies are even better, but unless they harden up, they are not strong enough to withstand the process of making the Chipwich. Grandma's Cookies also work very well because they are big. They just lack in the strength.
Any flavor of ice cream will do. Choose your own flavor. I purchase the ice cream in the tubs, so I get more bang for my buck.