Spoonflower prints fabrics for anyone. So, I could submit my designs, and spoonflower will print them and sell them on the site. Or I can print them and use them for my own personal projects.
I dye fabrics too, which is how I have fixer on hand. There are a couple different ones out there. :) it's what textile companies and tie dyers use to "set" the dye, so that it won't bleed or fade.