I've used all sorts of sit/stand desks and chair & swiss balls in all sorts of combos, but I've learned over time that I prefer a static height desk and a padded piano bench to sit on. Sitting on a bench rather than a chair with a back encourages much better posture [for me]. It also encourages me to get up and move around more because it's trivially easy to get up & sit back down from any angle.

Virtual meeting platforms: Webex is by far the worst. Zoom is amazingly clunky given how much money they have to spend on it, but at least it generally works across various desktop & mobile environments. Meet is the most basic, but it "just works", and the features on web & mobile are identical (unlike some of the options). It also seems to have been undergoing the most consistent feature development over the past 18mo. Teams is perfectly fine on desktop if you're already bought into O365, but it's hot garbage from ChromeOS or if you're a guest.

Collaboration/productivity software for enterprise: O365 contains too many products, is too complicated, and afaict, nobody actually knows which is the right tool for the job. If it was just Word/PowerPoint/Excel/Access/Outlook + Teams it would be fine, but add in Sharepoint/Viva/OneNote/OneDrive/Forms/PowerBI/Publisher/Project/Bookings/Planner/Visio and nobody knows which tool is the right one for the job. Google Workspace can't hold a candle to Word/PowerPoint/Excel but arguably is much easier for normal people to grok. Trying to find files at an O365-using company is nearly impossible.