When we lived in Washington a neighbor of ours had three prolific blueberry bushes. If you can get yourself a neighbor with blueberry bushes, I highly recommend it. One of the best things we discovered to do with blueberries was to freeze them, and then eat them frozen like little round delicious juicy fruit popsicles.
You can also do this with grapes and it is amazing! Your kids with think you are a culinary genius and the maker of the most fantastic summer snack in the world. You'll be smiling brilliantly because you will have discovered a way to make them bed to eat fruits.