Prometheus Design Werx’s PB&J is a keychain-sized tool that you can use as a closed-end wrench, a pry bar, a nail and staple puller, a 1/4″ bit driver, a battery bay driver, an oxygen tank wrench and a bottle opener. It has a lanyard hole and a wire spring gate so it’s easy to carry around. It’s made of a solid billet of titanium.