Looking at them.. first thought was plants. (dear ol' was a green thumb, my childhood home was pretty much a mini forest..) What about re-branding them as some sort of planter shelves. Top pots water the next, etc.. with a catch plate on bottom. Sell them on etsy, stackable herb garden. Be perfect if they in fact fit a certain starting pot size. 'Next up on QVC..'
No idea how to sell these for gridseeds in bulk. Best of luck with finding a solution.
Thanks for the reply man!
Modifying these cases for other uses isn't a bad idea, I guess I was just kind of hoping somewhere out there somebody would be interested in a bulk amount of them 'as is'. I still sell one or two a week on various outlets so it looks like GPU mining isn't completely dead. Though sooner or later I may need to just modify these since at this rate it'll take years to get rid of them all