This week I was contacted by a custom telegraph key maker, a fellow who makes tattoo machines, a watch case maker and lastly a fellow who wanted the wheels for his car engraved. Talk about a buffet!
I've been to some of the ham radio fests, and some of those keys are works of art. Engraving some of those can be tricky, because of obstruction, but you won't know until you get one. Most likely, you'll need to disassemble, then it's smooth sailing.