So I got my iPod signed by one of my favourite singers last night, but the issue is my iPod is something I use daily. What would seal it so I can keep using it, but not make the buttons stuck?

EDIT: thank you for all your suggestions! I'm starting to think I should just get a second iPod to use out of the house haha. I'll 100% get a clear case however and potentially an enamel spray if I find one that won't damage anything!