Dessert Mashup a la Cronuts are all the rage, and here's my contribution: the Sm'ice Cream Sandwich.
Take a warm knife and cut through the ice cream sandwich (I used Skinny Cow, but Nestle, CoolHaus, Klondike would all be fantastic). You can store them face up on a baking sheet in the freezer ahead of time. Roast the mallows over a grill, stovetop, with a blowtorch (...), and de-skewer toasty mallows onto the ice cream. Scarf!