What can I use to decorate this swim cap?
I'm decorating a swim cap as a joke for someone but I don't know what to use on it. I want some writing on it too. Should I just use permanent marker? I also want to put on some rhinestones or something. What kind of glue should I use? I need some materials that won't break off or wash away. I don't know what will work. Any suggestions? It's a silicone one if that matters...