We started with cheap white bath towels which I was able to find for $4 each. When picking your towel try for natural fibers (ie cotton or bamboo) so you will get more vibrant colors when tie dying. On your towel, using duct tape, spell out your name or message that you would like to appear on your towel. This step did take awhile especially as this step was above the level of some of our participants so Mom got to prep 8 towels.
After the towel is colored to your liking let it dry (we left ours on the grass in the sun), once dry peel tape off to expose your name and leave for 8 plus hours for the color to set. The next day run the towels through the laundry, washing and drying (in the dryer) so the colors set.