I like to see a manufacturer wring every last drop out of a material, and a New Jersey company called Flexcon has bent corrugated plastic sheets into every kind of useful shape they could think of.
Flexcon makes hoppers, stackable hoppers, dividable containers, nesting containers, skinny containers, fat bins, bins with metal handles, fileboxes, the weirdest way I've ever seen to ship a baby, and more all using corrugated plastic sheets and the same crimping connection seen in the U.S. Postal Service bins.
They make a ton of shipping and storage supplies out of other materials too, and with clients like Toyota, UPS, Nike, Nissan, Canon, Oakley and Porsche, their products are apparently in high demand.
Check out their corrugated plastic lineup here and their other stuff here.