Gas masks...

[Jim Warfield]

My old art teacher was a very nice, quiet, polite woman who used to say, "I wouldn't give you a nickel for a "Normal" person."
I tend to think that price depends upon the fat and bone market that day, myself.
You never want to sell too cheap!

[Dr. Giggles]

I used to have a gas mask character. But the mask broke.
Most masks allow you to purchase voice amplifiers, which is sort of like a voice changer. They also look cool.
Fun to turn the volume up full and run by a group while roving when they arent paying attention saying "Conform, Do not Resist, Conform, Do not resist" Usually gets a good reaction.