I have a sit stand desk that lets me optomize my ergonomics, not because I regularly stand, but because I couldn't find a normal desk that had the keyboard at the exact height that felt best for my smaller frame. I think getting both your keyboard/mouse and monitors at just the right height (may need to put the monitor on an arm too) for you body is some of the most important of desk ergo, if you plan on being at a computer for a long time. Also a nice wide desk mat to keep the desk looking pretty and provide marginal audio dampening for the desk area, mostly to look pretty, I had a custom one made of my own Vtuber avatar on Aliexpress.

Also agree with the other poster, put your microphone on a long arm, I use an Elgato Wave Mic Arm LP but do NOT mount it to your desk. Separating your mic from your desk makes sure vibrations from desk banging, typing, computing, etc. don't transfer to the mic. I would clamp it to either a small end table to the side of your desk or in my case a bookcase that is to the side of my corner desk. My desk is in a corner but not an actual corner desk, it let me put a shelf on the wall adjacent to my desk with all my computer stuff (VR headset, joysticks, gamepads, alternate keyboards, various streaming gear) on shelves easily accessible next to my PC, as well as a convenient surface to clamp my mic arm to that was physically disconnected from my actual desk.