make some kind of modern bladed weapons and/or tools.
A machete or large bowie-knife to go with your zombie-line would be nice. Nothing fancy, just plain and efficient-looking.
second this. Specially a plain machete.. and more "normal" sized everyday objects.
Olle Nyman commented
Like this one; http://www.coldsteel-uk.com/store/latin-machete-97tm21-full-1.jpg
Or any of the designs from http://www.zombietools.net/ Or maybe a nice modern tomahawk? http://images.knifecenter.com/thumb/1500x1500/knifecenter/benchmade-knives/images/BM172BKF.jpg