I made this balloon fabric ball for my great nephew, Benjamin. (Of course it can be filled with batting instead.) We had these when my boys were little and they were called Balzac. We had a blast playing with them in the pool in Florida on vacation.
I'll tell him it's great aunt Debbie's "Magic Ball"!
If you look at the picture in the bottom right hand corner you can see a round orange circle. This is the opening I left to not only be able to turn the fabric inside out after stitching but also place to insert the balloon.