[Ghost of Philip Marlowe]

Where do you get those? Pretty clever.

[MrB]

You can get them on ebay. I first saw them at a gun show.

[Dr.Zoidberg]

http://www.selfdefenseproducts.com/Wild-Kat-Keychain-p-1-c-308.html

And before anyone suggests it, I have no interest or links to the company or the product.