They're starting to phase in desks at my current job where you can save a few preset heights, and push a button to shift to one. It's pretty cool, though 90% of people with them only sit.

I place this (http://www.ikea.com/us/en/catalog/products/90184047/) on my desk when I want a standing desk and remove it when I am ready to sit down :) . I like Ikea.

I place this https://m.ikea.com/us/en/catalog/products/art/80267566/ on my desk, you can put more things than your computer and lean on it, it holds well.

That's a good idea - the Marius table that I use is a bit precarious with its round top.