My children and I made all these designs over the past few years. Nearly all of them are available in my shop or my daughter's Spoonflower shop. I'm busy finding and uploading the last few colorways I needed to make to finish the quilt.
This design does repeat both sideways and top-and-bottom; it will work as yardage on any width fabric.
[note: updated 9/28/12 with a few improved fabrics for a few reds, purples, and blue-violets which didn't print as well as I'd liked on the fabric linked to from here.]