I have too many monitors to make a standing desk work for me. What does work is to place the printer in another part of the office. When I print an invoice I pick it up and place it in another office to be mailed and repeat for each. I get up, get steps and move. Works for me.
I do that too. I have a printer in my office, which I never use. Instead, I print everything to a printer in another room.
However, you have to print to use it. I have a massive monitor, so I print less now.
I also use a stand up desk. So, I do both.
I have both a mat and a “simply fit board”, which I use sometimes too. It’s fun to balance on.