Halve pound cake horizontally. Using a serrated knife, cut off the rounded top of the cake so each layer will be level. Cut each half into a flip-flop shape*. Place ice cream in a small bowl and stir to soften. Spread softened ice cream over one of the cakes. Top with second cake. Place ice cream-filled cake on a baking sheet. Cover and freeze until firm (2 to 3 hours). Spread with whipped topping.

To decorate, cut the ends of two twists at a diagonal. Insert a toothpick on the underside of each twist. Arrange the two twists with the cut ends together to form a V-shape, inserting toothpicks in cake to hold the twists in place as straps. Arrange candy wafers around base of flip-flop to decorate. Cover cake loosely and freeze until serving time. Serve on a platter sprinkled with graham cracker crumbs as sand, if desired. Makes 6 servings.

Tip: To cut flip-flop shape, trace the bottom of a child-size flip-flop (needs to be 7 to 7 1/2 inches long) on a piece of paper. Cut out shape. Place paper, clean side down, on a piece of clean cardboard or sturdy paper; trace shape. Cut out shape. Place cardboard shape on top of one cake half and use a small sharp knife to cut around shape and through cake. Repeat with other cake half.

Cake for 12: For a larger crowd, double recipe and make a pair of flip-flop cakes.