I used to have these that worked fine before I upgraded, simple and cheap : https://www.amazon.com/Liquid-Stands-Isolation-High-Density-Vibrations/dp/B0CVXT7C2DYeah, the entire arrangement is terrible soundwise but there are some limitations I can't overcome without complete rebuild. The desk is too close to the wall, and it can't be moved without the other table on the right, which at this point can't be moved either.
A couple of times a year I think of it, and then it stays waiting for the next year. ...but I swear I'll do it once I make time