I took quilted practice piece from when I first got my machine and made a cover for it. I folded it in thirds on a short end and sewed it closed to that the end fitted over the front handles of my machine. The rest just lays over the machine.
I took a couple of practice quilts and made sleeves for the table leaves for my dinning table. Also made dog bed for a friend.
When I made practice quilts I used cheapest fabric, muslin and batting. Perfect for these uses.
Don't make them anymore.