What a fun and clever quilt! I would be inclined to finish the balls on the edges but as for backing I have never worried to much about that since it is the back. You could use a frozen fabric which seams to be all the rage right now or any other fun print. Just make sure it isn't to dark and shows through the batting. I used to love to play jacks and love your quilt.

Wow, that was quite a project but your granddaughter will love it.

It's a beautiful quilt and she will love it. You will be proud of yourself when it's done, especially with hugs and kisses from her that you made her this special quilt.

I really like it. The back could be orange or maybe her favorite color if you know it.

Great quilt!!!

I like the idea of orange for the back, because that will tell it's story of the orange ball. I love things that tell a story.

Gosh that is just a great quilt! I love it and I am sure she will too. I wonder if there is a ball and jacks print fabric. Good work Grandma!

Nice Jacks quilt.

It is so cute! I would go with a colorful print on the back, something with the orange that matches the balls, or includes the jacks colors. What is gd's favorite color? Could go with that.

super cute but I can see why it would be challenging. You should be proud that you added a new level to your quilting and it looks great.