I used one of the Ergotron line of mechanically adjustable sit-stand desks for a long while. They're pretty good - I've subsequently changed to a full-on powere

I used one of the Ergotron line of mechanically adjustable sit-stand desks for a long while. They're pretty good - I've subsequently changed to a full-on powered sit-stand desk because I can fit more monitors on it, but the Ergotron did the job.