I've written previously about my simple $50 standing desk that can be installed on a wall. That standing desk worked great at my house, where I worked full-time as a remote employee for a few years. I started a new job for a local company in April 2013, working on-site, and was relegated to a cubicle with a decidedly un-adjustable sitting-height desk top. Even when using a Pomodoro-esque technique of standing and moving around every 20 minutes or so hasn't been much of a help.
Not to be kept sitting down by 'the man', I eschewed the provided office chair and adjustable-height keyboard tray, and built a small surface on which to work in a standing position, while still working in the cubicle to which I was assigned. Behold: