Workbenches are where Joel spends parts and tools to upgrade his firearms and holsters. Finding every one in The Last of Us Part I earns the Prepared for the Worst trophy.
The Outskirts: in the museum basement after escaping through a garage door. Bill's Town: in the church basement. Pittsburgh: three, one past the hunters' sleeping quarters before you drop to the street, one in an office just before the hotel kitchen, and one on the second floor of a building entered through a garage door. The Suburbs: in an open garage. Tommy's Dam: on the left side of the control room. The University: two, in the room with the flamethrower and in a science lab where you first enter the building. Bus Depot: two, in a tent just before the bus and in the hospital ventilation area where Ellie lets Joel in.