I prefer the cheap and tacky option - my banjo has a clear head (which is more than can be said for me...), and I just glue a picture to the piece of timber somebody so conveniently left inside.

Okay, it probably holds the neck on or something, but who cares? It's great for gluing piccies to...

That way, I can ring the changes as the spirit (or ex-lax!) mmmmmmmmmmmmmmmmmmmmoves me... !!