I piece scraps of batting and then cut into squares for QAYG string blocks using up some of my mountain of scraps. Join with 1" (unfinished) sashing and you have instant charity quilt tops. If you make a couple of these blocks every time you sit down to sew you'll have a 'free' quilt in no time.
The scrappiness can be tamed by using a constant colour on the diagonal (makes a lattice when blocks are joined) or the same colour across two opposite corners (makes diamonds when joined).
If this is not your 'thing', find a group who might like to take this on. Great for a youth group to start sewing.