Thrown Weapon (Dart) - What can I actually throw?

[talonthehand]

Originally Posted by Hellboy

The goal is basically differentiating between darts which point themselves forward (as others have identified) and other random cheap pointy things you can toss from a box which should lack that benefit.

Not your goal for this particular thread - for the numerous threads that you've done. Are you looking for exploits in the game? An attempt to simulate reality in GURPS? Preparation for running a game, with the expectation than the players will explore every option? If you tell us what your goal is, we might be able to better help you.