Tomahawk idea sounds pretty good.
I think x5 scrap x1 chunk for a throwing knife is a bit too much though, pretty sure you could craft one with x3 or x4 scrap metal.
As for the tomahawk, x3 steel chunk, 1x fur pelt/50x duct tape 1x two by four, or heavy stick.
Allow it to be used as a hatchet in addition to awesome throwing weaponage. fur or duct tape for the grip, wood for the handle.
Shuriken could make it in I suppose, but to be real honest I don’t think they’d be that effective against zombies. If so think ultra lightweight, low-med damage weapon. Even then it should be pretty good with a high throwing skill. You should be able to carry about 10~ for every spear.
[glow=red,2,300]Scrap Shuriken![/glow]
Tools: Hammer + (? something to sharpen it. Rock? Acid?)
Materials: x1 scrap metal
Skills: Fabrication (1), Throwing (2)
A small piece of scrap metal beaten into a razor sharp disc.
It’s very light and could make a nasty throwing weapon.
After that we could have ones made out of lump/chunks of steel with higher damage.