Monitor arms. They free up a ton of desk space and are mechanically simple enough that they have a good chance of lasting a lifetime. That is assuming we still

Monitor arms. They free up a ton of desk space and are mechanically simple enough that they have a good chance of lasting a lifetime. That is assuming we still have to use monitors instead of projectors/AR/VR in 2050. The first arm I bought maybe 10 years ago is still going strong and have survived 3 different monitor upgrades. Oil it a bit and it's as good as new.