Any body ever think of one of these?CIA Letter Opener
I like these newer, improved ones better:
The Cold Steel *Delta Darts* are decent, too:
Three of them rest neatly behind a wide tie, and their zytel nylon construction makes them tough, light and bloodstain-resistant. They also serve rather nicely as tentpegs on ice or frozen hardpacked clay.
That company also used to (maybe they still do) make a Tanto styled (similar to the one shown, without the upper surface sharpened - similar to a chisel, with the front edge at a rather blunt angle, and one sharpened long side) knife, fiber reinforced, can be sharpened to a pretty impressive edge, with a nail file, emery board, whatever. X-ray signature relative innocuous, even at the most "vulnerable" angle. It can effectively be employed to stab through impressive amounts of resistant layers. Etc, etc. Retailed for under ten bucks. Another item was similar to the "dart" except significantly larger, and was disguised as the handle for a ladies wig-style round brush, which also served as the sheaf.
Folks, not all plastic knives are the stuff you see at picnics. Some of them are no-kidding weapons.
Ditto Bic Ball Point pens.