I've been making a lot of Amazing Puzzle Balls
on planes when I travel. I sew the QUARTER-CIRCLES on the machine at home, then turn and stuff them on the plane and sew them together. I can fit all the parts for a size small in my oversize purse/computer bag but I frequently push the limits and bring a Medium. As soon as I open the baggie of fiberfill I'm more or less committed to stuffing all 12 QUARTER-CIRCLES. Ain't no way I can get it all back in the bag.