How about some sacrilege? The same amount of peanut butter cup but in a more efficient square shape. This is to save about 15% in packaging and increase the number of bars that can be shipped around the world.
But wait there is more: I ditched the black wrappers so the cardboard tray has a flap to keep the cups separated. This helps reduce more waste, plus those darn wrappers always tear some chocolate off the bottom of the cup!