Well, e.g., you can get a Seiki 39" 3840x2160 TV/monitor for $500 from Amazon right now. It's not the world's best monitor (TN panel, 30Hz refresh, and be warned that many things don't work well with very high-resolution monitors right now) ... but it's ~40" and it's >3000px wide and it's cheaper than some "normal" monitors.
Why would I want that when I can get two of these, have 43" of real estate, and $240 left over?
Continuation of: Spend Money on Ergonomics, by Kevin
Three years have elapsed since Kevin wisely told us to spend money on treating our bodies well. It may be time to check for new gadgets, to verify what has worked and what has not etc...
If you have purchased an item for this purpose, or intend to buy one and don't know which, tell here, ask here.
Nick Bostrom uses a mouse that looks like a plane controller joystick.
I've seen keyboards that bend sideways, that are concave, that are convex, and that look like a sphere.
At FHI, dozens of books are used so that computer screens stay at eye level or above.
But I am no expert and I have not looked myself, nor would know how to. So please share in the comments the best knowledge about:
Keyboards
Mice
Chairs
Balls to sit on
Pillows
Beds/Matresses etc..
Screens - Size, position, brightness etc...
Other household office items - Stairs, Handles, Shower etc...