Probably most of you knew about the existence of these - I did too. I just found an interesting way to use them. There are gold metal boxes with 25 item count that say 0 stones where weight is instead of 0/400 stones. That means they hold unlimited weight. Not a huge deal in the world of secures etc, BUT a big deal when you are trying to stock heavy items like potion kegs, rubble. etc. I just redid my rubble vendor with some and it is so nice not being constricted to the 400 weight limit with the rubble. Anyways, I hope this helps someone out.