assorted quilting Jelly Roll 2.5" fabric strips from $6.49/20pc with free Prime shipping $6.49
Amazon has several Stof Fabrics of Denmark jelly rolls (2.5" by 44" strips of fabric) on sale for great prices. I haven't used this brand before but for the price it is hard to go wrong! They are 100% cotton. I bought a few to use for making quilts for Christmas gifts. Jelly Roll Race quilts are an easy sewing project you can make with these (you'll need 40 strips).