My Unknown BBQ Hinge is probably the best accessory I've added to my WSM 22. I never have to look for a spot to set the lid down or get that nasty grease ring on the deck.
Hinge, although I think I need to modify mine a bit as the "hold open" slot seems a little deep and I have to two hand lift the lid up to close. I know that this is designed this way to make sure the lid doesn't accidentally close, but.....
Rib racks. I could give up my hinges, my temp controls, my tables, and any other toy. Giving up my rib racks would fundamentally change my ability to put out a large volume of food. More often than not, when I Light up the 22, I pack it full.
It's gotta be the Maverick for me. It makes it so much easier to monitor. I know some people think it's cheating but I love it.
I'd really like to get a BBQ guru next.