use the scraps on coasters, placemats, small items, I store my leftovers in large fabric laundry baskets on rollers and then bag them for my sister to use in stuffed animals.. but I find I use a lot up when I need to add a price on. I do not buy by the batting except ny the 30 yard rolls and buy 2 to 4 at a time..
I cut off the size I need on each quilt, you waste a few inches each time but I use them later somewhere.. good luck