I have my old kitchen pantry in the shop for general storage. It's 24" wide and 24" deep which made reaching for things in the back of the shelf a real hassle. Not to mention making it hard to see back there.
So I made three pull out shelves where three fixed shelves were. 1/2" sides with a 1/4" bottom panel. I didn't have any thin plywood so I actually glued up the three panels from scrap - this was a great way to use up those "shorts" you can't bear to discard!
Dead sexy