Do It Yourself White Cowboy Hats. Wrangle up your posse and get ready for a stampede of smiles as they get their hands on these Do It Yourself White Cowboy Hats. Your own paints and markers, a few embellishments and a little imagination are all it takes to give these plastic DIY crafts your own Wild West flair. We recommend using washable markers, permanent markers or acrylic paint, sold separately online. (1 dozen per unit) 20" circ. © OTC Plastic.