However, since I actually use my laptop on my lap (and not on a desk or table), it's important to find a product that attaches to the laptop; as compared to one with a stand-alone kickstand (or similar).How did you imagine this being set up? Above the main monitor, or beside it? Above would make it top-heavy, and I doubt the hinge will be up to it (unless you attach it to the base - still it will tend to make the whole thing want to topple backward. Beside would put the keyboard off centre - which may not be a big deal.
Perhaps something like a TV with its own stand that can go on the floor in front of you.