Meanwhile, place the confetti cake cookies in the blender and blend into fine chunks. During the last 5 minutes of freezing add the cookie crumbs and sprinkles. Once the ice cream maker is done, freeze the ice cream for about 4 hours. (Refrigerating the other cookies during this time would be smart)
Using an ice cream scoop or a large spoon, scoop a tennis ball size of ice cream (yes, you want it to be round as well). Place the ice cream on the chilled cookies and make a sandwich. Repeat with all the cookies. Place them in an airtight container and freeze until serving.