This FlexiSpot riser arrives fully assembled, and sits on top of your existing desk. Just place your monitor(s) on the top shelf, your keyboard and mouse on the bottom, and use their integrated spring system to raise the entire setup from a sitting to standing position within seconds. I own a very similar product from Varidesk (which was more expensive, by the way), and I absolutely love it. Just use promo code 2058C7FQ at checkout to save $54. Just don’t get too sanctimonious about the whole thing.