Greetings!
Back in the 60's or 70's, there was a company that manufacturered fairly large metal flashlights (bigger than D-Cell Maglights) that had built-in tear gas cannisters and a button to spray it out of the bezel-end of the flashlight. I saw one at a yard sale along with a few spare tear gas cannisters about 15 years ago, but I wasn't yet a flashaholic so I didn't buy it like I would today. I kick myself frequently for not buying it - only $10 for the lot, and it's probably worth a fortune today!
Best wishes,
Bawko