They Have Sharp, Pointy Teeth!
According to Ray Bradburry.. as he walked away smiling and the man who had all those problems with his own skeleton was left a quivvering jellyfish...
I would think the "acting" in such a part would carry it much more than any physical costuming.
Maybe a shabby attire with numerous hand-sewn pockets holding the tips of bones protruding and jangling as he moved and walked would sell the concept?
A lustfull gleam in the eye along with a decidedly evil grin, concentrating upon those quiet people who don't like being noticed at all would go far in establishing .
He would not be nearly as picky as his buddy "The Scab-Collector!"
A Character/costume idea from real life.
I was working in a grocery store when I came around the corner and thought I must be hallucinating!?
There was an eldely man , thin, who looked like a black hole (from outer space?) No light escaped, no reflection from his skin or clothing, he wore black rubber boots, his skin was as if she had smeared soot over every part of himself as was the look of his clothing!
He lived in a chicken coop, he had a house next to it full of chickens. He sold eggs door-to-door! A knock on your door was followed by him standing there holding one egg in his flat black fingers.. "Wanna buy an egg?" Then if you didn't respond quickly enough he would try to impress you by spitting on the egg, wiping it off, just incase you had been put off by any chicken feces left smeared on the egg!
(Who Couldn't be "Impressed" by all of that?!)
If he ever needed to steal eggs from someone else's coop he was all "Commando-ed" ready to be invisible in any shadows helpfully provided by the mere absence of light.
Imagine being a kid, sleeping outside at night looking out the opening of your pup tent with your friends .. and you see this flat-black person coming down the street! WOW!
I just know, some parents HAD to have referred to him as some kind of a Boogeyman , just to keep their kids scared and in-line!
"The Egg Man will get you! , so be GOOD!"
Hard to ever forget a real life "costume" like that.
if I were a bone collector
Now, I'm very new to this so take it all with a grain of salt.
But... if I were creating a character who's a bone collector, I'd consider what I'd want if I were a real bone collector. You know, I'd check out my options. That guys has a really nice tibia... excuse me ma'am, what lovely carpals you have... may I see them? I like scares that are creepy and a little bit ironic... so I'd ask guests if they have any osteoporosis in their family. I'd learn my bone names and use them liberally. I'd ask the kids if they've been drinking milk... because it's good for bones...
If I were a bone collector, I'd have some awesome bone accessories to go with my grungy clothes. Bone earrings, a bone necklace and an amazing bone belt buckle.
Hey, if you coat chicken bones in shellac, will they not get rancid for a few weeks?