Don't have a good office chair yet? Here's one on sale.

TL;DR: Be comfortable while working from home with a Yaasa ergonomic office chair for $305.99, a 15% savings as of Dec. 3.  You've probably already discovered this by now, but working at a makeshift home desk is not feasible for long periods of time. You need an actual office chair.  This Yaasa Ergonomic Chair is designed to keep you supported, comfortable, and mobile while you work. The five wheels at the bottom allow you to move from corner to corner or room to room if you choose; plus, it has a substantial cushion, a comfortable backrest, and adjustable armrests that can shift height, width, and position for a truly customizable experience. The height of the chair can also be easily adjusted from 17.3 inches to 22 inches. Read more...More about Mashable Shopping, Desk Chair, Ergonomic, Culture, and Work Life