More commonly known as a 'setsquare', this pretentiously named weapon could do untold damage to the neck, thanks to its three mighty blades, or corners.
Tri-dagger
written by Pe*e S*it*, approved by Conor
The Flexicurve - a bendy ruler used for drawing curves, but essentially a bar of rubber wrapped around a metal core. It doubled up as an amazingly effective cosh and thinking back, it reminds of that bit out of Lock, Stock... where that bloke gets beaten to death with a big, floppy rubber dildo.
written by Za*tro*zi th* M*s*er o* Di*ci*, approved by Ponky