I make about 1 quilt a month for Project Linus--usually about 50x60--the big kids love quilts too! Sew mostly from stash and donated fabs. For backs I piece in lots of colors. One lady suggested cutting up 10-1/2" squares with leftovers and then when ready to make back, assembly them in rows. They are easy to measure as each dquare is 10" finished. I'm going to try that idea on next back I need.