Lucky 13

[Dookie]

>cuts the hollow tube at an angle (with wire saw, those are easy enough to make if they can't be found) to produce a hollow tube with a sharp point. (Nerva)

You don't end up finding it, you're going to have to craft it.

>Looks for a propellant, from a lighter, a spray can, or the likes. And while he's at it gets a ball bearing from the flat-pack warehouse they have so many ball bearings in ikea (Nerva)

There's a lighter in a desk in the staff room, and you find ball bearings in the warehouse.