My neck is not great, and spending a lot of time looking down at my laptop screen really aggravates it. After damaging my screen a year ago I used a stacked laptop monitor that folded up, and it worked well. The main place I tended to use at full height was call booths, since otherwise I was usually at a desk with a real monitor or in a meeting with people where I wanted my monitor not to block my view.

My laptop eventually died, and the new one has a screen again. In many ways this is pretty great: my backpack is lighter without carrying around an extra monitor, walking to a conference room I don't have to worry I forgot my monitor, I'm not fiddling with cables. But I do really miss it on calls in the phone booths.

The booths at my work have a kind of soft material that works great with velcro, though, so I decided to try sticking my monitor up that way. It works great:

These monitors are only ~$50, so after talking with our operations staff we now have them in each call booth:

I'm very happy with these, and my coworkers who don't have neck issues have said they like being able to have notes open on one screen and the call on the other.