Sitting around one afternoon with a banana, a needle and some thread, I re-discovered a trick that the TV show Mr. Wizard taught me. With these tools you can slice a banana inside of the peel, so that when you (or your friend) removes the peel the banana will already be sliced. I began to pre-slice bananas and give them to people I knew. Even when you know how it is done, peeling open a banana to reveal those perfect slices transforms the mundane banana-peeling experience. The service provided by pre-slicing a banana is a small (and unnecessary) one, but pre-slicing magnifies the effect of the gift. The recipient not only gets a banana, they get the unexpected.
Make your own pre-sliced banana: illustrated instructions.