I know this isn't really a shop tool but I'm sure there are a few out there besides me and @bucky that change faucets on occasion, I think I've done a couple hundred in my life. Anyway this tool came out a few years back and at first I was skeptical, but I bought one and it's a game changer. It fits the supply lines and the flat washers that secure the faucet and makes changing a faucet a breeze. You don't even have to stick your head back behind the sink and roll your eyeballs up into the corner of your head to see where to put your wrench/pliers/basin wrench, with this tool you can do it all blind. No more laying on your back wedged under a sink trying to reach the underside of the deck without dropping tools on your face, no more pulled neck and arm muscles and busted knuckles. Reduces the total time from an hour or more to 20 min or less. I only wish I'd had one years ago.
https://www.amazon.com/Ridgid-57003-Change-Faucet-Wrench/dp/B078YYD66B/?tag=wranglerorg-20
https://www.amazon.com/Ridgid-57003-Change-Faucet-Wrench/dp/B078YYD66B/?tag=wranglerorg-20