this made me think of elementary school days, when we had pencil fights: who could whip their pencil hard enough to break someone else's pencil. with this, i'd be a champ!
an idea for the scribe, going off of someones PDA Stylus idea:
would it be possible to coat the tip with plastic, so that it won't scratch a PDA screen? if done right, it could also help protect someones pocket or an accidental light scratch or puncture wound. at the same time, the plastic tip would just be a *coating* over the Ti point, so it can still be thrust into a target.
also, i like the straw idea
also, for the pen, if you guys can put together a prototype, try approaching Cross, Columbia or another high-end pen company with it.
damn, now i'm coming up with (probably infeasable) ideas for how to go about making a pen
2 parts, threaded, the pointy end hollowed out through the end, and some sort of foam or rubber for a standard ink cartridge to be slid in and held securely: no rattling.