You could do anything that doesn't have moving parts- as in I would never do a pair of bindings but anything else is fair game. Helmets, topsheets, boots, fuck, anything really just be aware that it does peel off and your boots could very well look like shit after one hard run. It's not very durable.
That said, they make a ton of colors, pearl additives, matte and semi glosses, etc. etc. etc. They even do clears now if you just want to protect, say, your NS/J skis special editions or something.
"I know you believe you understand what you think I said, but I am not sure you realize that what you heard is not what I meant."- Alan Greenspan