Standing desks are great for you on their own, but adding a balance board to the mix is a low-intensity way of strengthening your core and leg muscles while you fill out spreadsheets and expense reports.
This standing desk balance board from Gaiam is low profile enough to bring into the office, and includes very comfortable footrests, so you won’t miss your anti-fatigue mat while you use it. I tried it on both carpet and hard floors, and it’s definitely more of a workout (and more fun) on wood, but it works well enough on shallow carpet too. Though if your office has carpet floors, you should probably be updating your resume.
Just be sure your standing desk is high enough to accommodate the extra ~4 inches. I found that standing on the balance board put the top of my monitor slightly below my eye line, which caused me to involuntarily slump. It’s an easy enough fix with a monitor shelf, but just be aware of it before you buy.
Using this isn’t going to give you six pack abs—you really don’t even notice it after a few minutes—but it’ll help you burn a few extra calories without really doing any work. And it’s kind of fun too, like a fidget toy for your lower body.