My DIY Darkroom is actually a walk-in closet that is being used as a darkroom and also to hang my clothes and other junk. I really don't have much room. I could put my all my development trays side by side but that would take too much room and I would have to remove some clothes out to be able to do that. I also thought about stacking them one on top of the other using stackable shelves which is the set up I have now. The only problem with that is that I live in an apartment and any spills causing chemical stains on the rug might cost me when I decide to move out. Another problem with that is that the chemicals from one tray might spill into the ones below. I'm not sure if that would hurt any but why take chances. Anyway, I Googled "stackable darkroom shelves" to see what I might come up with and this is what I came up with(see picture attached). I didn't make this up, somebody had actually tried this and the picture was posted on "Pinterest" . Anyway after careful measurement, I ordered a Sterilite 3 drawer Medium Countertop Unit from Target. It only cost $10, plus I could easily pick it up at the nearby Target store. When I first looked at it, it looked rather small and sure enough when i got it home, an 8X10 tray was a teeny tiny to big to fit comfortably in one of the drawers. My measurements must have been off. I quickly went online to see if they had any larger units. As far as I know, the company (Sterilite) sells these type of drawers in three sizes (Small, Medium and Wide). However, the Wide units were out-of-stock at Target. I then went to Home Depot, Office Depot, Staples(in that order) but none of them had it either ? Finally the clerk at Staples told me to check out "The Container Store" so I drove there cursing under my teeth all the way and by golly they had it ! It was a little too big for my tastes, but we could not find anything smaller. I figured I might want to do 11X14's someday and this Wide unit can certainly hold an 11x14 tray. The Wide unit only cost me $19.99. The only problem is that I might have to place it vertically in my walk-in closet, because it's just to wide and might defeat the purpose. The good thing is I don't have to worry about spills staining the rug. An if I fall asleep during a printing session (which i often do) the chemicals might last longer in those drawers. They are not exactly air-tight, but they are pretty snug. Well sorry for writing a book... I'll keep you posted on how it works out.