Another option to tying a quilt is to use one of the decorative stitches from your machine, provided your machine has them. My machine has the ability to stitch out only one iteration of a design. On my machine, this could be a flower, arrowhead, letter, etc. These can be placed at repeating intervals across and up/down the quilt, instead of tying. The interval is dependent upon how close the recommended quilt spacing is for the batting you intend to use in the quilt.