At home home, I built a simple wooden one out of scrap lumber much like TRDB's above, but with a plain plywood surface instead of the molded plastic. Pluses are it was dirt cheap, it's solid enough i'm sure 2 of us could stand on it, and I can leave it outside with little or no concern. Minuses are it takes up a fixed amount of space, so if I want it out of the way I have to move it where it'll end up in the way of something else later, and it's quite heavy so moving it each time is a bit of a nuisance. Since I don't use it all that often specifically for fish, it doubles as my BBQ prep station on the deck (when doing fish I have a large plastic cutting board I throw on top, so I don't need to worry about cleaning blood/slime off the wood afterwards).
My brother has one of the folding ones from Cabelas (or similar) w/ the little dinky sink which we've used quite a bit and like, so when we got our coast place he wanted to get us one as a housewarming gift, only he couldn't find one in stock at the time so he got us one of the Rapala folding versions instead. I/we've ended using that sucker a lot (fish, crabs, and clams), and I'd absolutely get one again. It's got a little drip channel running around the edges and a waste port where you can hang a bucket underneath, it's large/tall enough for several people to work around comfortably if you want to get an assembly line going, and best of all it's portable so we've taken it camping numerous times as well. I thought $100 seemed a bit much at first cuz it's so basic, but we've had it for years and it's pretty much bulletproof.
I realize the OP said at-home, but even if you don't plan to take it anywhere, it folds up so you can store it flat/upright out of the way, and it's easy to move around if you need to for whatever reason. I guess if you have enough room to dedicate a full-time space for a plumbed station that's ideal, but in my case I can deploy it on the driveway and then simply hose everything off and stow it back in the garage when I'm done. Even if I had a Cadillac permanent home station, I'd still recommend having one of these ready to toss in the truck for your next group shellfishpalooza: