Use the same process you'd use for canning to prep the juice. Then you can use the jars you have and process what's possible. Just pour the remaining juice in freezer containers (leave some expansion space) and freeze. That's it.

Carol

Here is a link that might be useful: How to Can Grape Juice

Old claen, rinsed out paper cartons for milk and fruit juices can work. Also grape jelly? a favorite for most anyone one. My dad just put his in the frige and forgot about it. a few months later I tasted it, and it was a bit fizzy and had turned into an alcohol.