If someone had the idea of selling miniature balls of cake and claim that they're the missing holes from donuts, I want to market swiss cheese holes.  Obviously these would just be little small circles of cheese that fill in the missing holes from a slice of swiss cheese.  I'm not sure what you would want to use these for.  I guess if you just wanted a tiny little piece of cheese, but not a whole slice.  I think I've got a multi-million dollar idea on my hands here.  Don't steal it!