I use the thin stuff for string quilts, too, and always check out the thrift store for men's 100% cotton shirts (plaids)and fabric. The other day, I got 6 unused homemade pillowcases and a panel for $1.00! The pillowcases are made from quilt store quality fabric! Also bought 3 men's shirts (very large, so lots of fabric) and a Singer 3314 (needs a few parts - new foot, spool holder, button for reverse knob), but sews really well. Total cost: $12.36!