Puree grapes in food processor until liquified.
Strain through sieve pressing to get as much juice as possible.
You can optionally add sugar if extra sweetness is desired.
If you are using a Zoku Quick Pop Maker:
Place stick in position.
Pour juice in maker up to fill line.
Wait 10 minutes or until frozen.
Use tool to remove pop and place in freezer.
If you are not using a Zoku:
Pour juice in popsicle molds or small paper cups.
Place in freezer for 10-15 minutes or until mixture begins to firm.
Insert sticks and return to freezer for several hours.
Use hot water to release from molds.