Well tossing reality out of the window I’d want:
Dual trusty .357s
A bandolier full of exploding rounds
A giant orange foam cowboy hat
Tossing reality back into the picture, gravity would crush and/or tip me over. But I’d still want a .357 just because of it’s “badassedness”, and not practicality. After what good is killing zombies if you look some dufus shooting at them with a plastic gun.