Have you ever seen something like this before? It's great! Really...I am totally in awe of this giant cupcake mold.
You can use ice cream as the topping (see 1st picture), just use frosting, or go above and beyond and make something like this:
This one is from Williams Sonoma for $35 bones but after doing some research because I MUST own one of these I also found out that Wilton makes the same mold. I found the Wilton one online at Target for only $27.99. My son's birthday is in less than a week so I am going to run to Target and maybe a few other stores and see if I get lucky.