You can place each sucker in an individual cellophane sucker bag and close using a twist tie. You could also use a sandwich bag, although it won't be as pretty looking. If you don't need to store them individually, you could also keep them in an airtight container. Place a piece of wax paper between layered to keep them from sticking together. There is no need to refrigerate, but you will want to keep them in a cool, dark place.