Punch daggers are nice. Make sure it's long enough to engrave "Face=Stabby" on the blade.
Personally, if I'm going to stab someone in the face, I'd want an icepick, but we all know about my obsession with icepick lobotomies. Otherwise I prefer blunt instruments for the face; there's too many bones there to stab well.
Yes. I will get a big iron mace, and name it "The Face Mace".