When I was crafting and selling at craft shows, I was always looking for projects that would be unique and that I could make quickly and inexpensively. This is one of those projects!
You can use any towels (these were all from Walmart), even if they don't exactly match. The designs all fit a 4x4 hoop and are finished entirely in the hoop (including sewing them on to the towels). Instructions are included with the set. Most of these are small enough to sew out in under 12 minutes - none take more than 20 minutes.
You can even make a set out of just about any kind of towels - whether they are flour sack or thick terry or anything in between because you sew the design on regular fabric first and then attach it to the towel - no wash away stabilizer needed!