Spike strips. Activate and pick a direction to set a line of spikes on the ground to act like barbed wire/caltrops for zombie feet. Can sometimes be found on the road to ruin the day of many wheels.
Manhole shield. Makeshift shield made from a manhole and some rope. Very encumbering on the arms and hands, but provides a decent amount of bash protection. Can block attacks, maybe depending on the hp of the arms.
Ball and chain. Round lump of steep with a chain or rope attached. Comes in a variety of sized. Smaller ones are faster on the hits, while the big ones are slow and heavy and hard-hitting. Like a bullwhip, it has a ranged attack, but the bigger ones are pretty slow on recovery.
Battering ram. Log with a rope tied on each end.
Brick on a sock. Like a rock on a sock, but with a brick.
Spiked gloves. Thick leather gloves with shards of glass and some nails superglued on the surface. Looks cool, and a fine example of being really dumb and ignoring the risks of gluing spikes on gloves.