We found these on amazon and they are great! Small enough to stack and fit into boxes, big enough for all your bits! We have done All Creature Big and Small, Concordia, Puerto Rico, Grand Austria Hotel, and the list goes on.
Bit Bins are the best!
https://www.amazon.com/gp/product/B01B5B4ZSU/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1