Plenty of people are using standing desks to get more active at work. Standing for too long can become a bit tiresome after a while. The Stoic anti-fatigue mat has you covered. It has an uneven surface that strengthens and massages your feet.
Stoic has over 50 setup options for you to choose from. By moving your feet on this mat, you will be able to increase your range of motion and build strength and flexibility in your feet. Expected to ship in April. You can find out more about it here.