I've been using a standing desk in various forms[1] since 2009. I've also been using dual vertically stacked monitors for a long time and love it when using a standing desk. I wrote my thoughts about how to be successful 4 years ago[2] which break down to.
1. Get a padded mat or soft shoe inserts 2. Don’t force yourself to stand 100% of the time 3. Always start your day standing
I also wrote about how to modify your existing desk[3] or build/buy[4] a standing desk. I haven't taken pictures of my standing desks since ~2014 but my setup hasn't changed much.
[1] https://goo.gl/photos/cUuQvoguMoz7Czj7A
[2] https://medium.com/@rothgar/how-to-be-successful-with-a-stan...
[3] https://www.howtogeek.com/99961/how-to-modify-your-existing-...
[4] https://www.howtogeek.com/100748/15-ideas-to-buy-or-build-yo...