There is a bread that is sold in the deli section at most supermarkets. I can't for the life of me remember what it's called, but the slices are only about 2 1/2" square. Get a loaf of that, spread some cream cheese on each slice, press a slice of cucumber into the sour cream, them sprinkle with a bit of dill. Very easy to make, and they're really good!
Donna