BremTech 21-B
This video shows how I made a mobile rack to store my many Harbor Freight parts bins. Previously, I was just staking them, but it seemed that I always wanted the bin in the middle of the pile. So, I decided to make a rack that would allow me to remove any bin without disturbing the others.

Harbor Freight thin parts bins:
https://www.harborfreight.com/20-bin-...

Harbor Freight deep parts bins:
https://www.harborfreight.com/8-bin-p...