Me, too! I shop for flannel sheets at the end of the winter season and get sets - twin, full, queen or king - at
very reasonable prices. Plus I get a pillow case or two to go with the quilts that are backed with the sheets.
The fitted sheet can be 'unfitted' by taking out the elastic and the darts that 'fit' the sheet, then squaring the sheet. The pillow cases can be cut apart (easier for me than using the seam ripper) and then used with the rather large scraps left after squaring the fitted sheet to make another backing.
I've picked up some sheets at Goodwill and used them for backing, too. When I do that, I make sure to thoroughly examine them for soiling and stains before I purchase them. I learned to do that the HARD way!
