We would do a Diet Coke (AKA Elixir of Life) cake! round - 13 cans round - 9 cans (just around the edge, not in the center, this layer only) round - 8 cans use cake tins instead of cardboard to support the weight of the beer.
Rocket Dogs -- put a hotdog on a skewer, wrap dough strips around them, then bake them on a cookie sheet as the instructions on the can say. Cut a piece of cheese for the top and slip a cupcake liner on the bottom.
Another version of the of July food flag. Cut up watermelon squares or strawberries and bowl of blueberries for stars. For white stripes use instead of bananas (they turn brown after awhile) use fruit dip! Looks easier than others.