One thing we did with batting to shrink storage space of odd piece sizes, was to sew a pillow shape out of batting.square, with open side uneven ( one side has a extra 6-12" extra). take batting pieces, fold to fit pillow, stuff in laying fat, fold extra part of pillow over batting. Cover with pillowcase--made up of orphan blocks. the fuller it's stuffed, the firmer it will be. We use them for boosters on folding chairs for sewing at church or camp. Not sewed in, can measure,label size and use as needed.