I made a quilt last year and bought a sheet, tie-dyed it (rinsed it really well) and used that for the backing. The recipient really liked it as she said either side looked great. I used tie-dye colors that were the same as in the fabric that I used for the front. Other than that I have given 2 quilt tops that I didn't get finished in time and took them back to quilt. That went over very well.