Switched to a standing desk at work. I have one at home and I mentioned the idea to my boss. He eventually found a post where the right $22 at IKEA lets you build a desk -> standing desk converter. It's basically an end table with a shelf screwed to the side; since you are making the screw holes yourself, the shelf is at whatever height is ideal for you. He decided to try it out also, along with a few other people, so we shall see how the grand experiment goes.

It's been a few hours and I have already discovered that standing for long periods in tennis shoes is not quite the same as standing barefoot. If I don't adapt, I may need to buy new shoes.