Plastic milk crates! They are pretty expensive in the department stores, when you realize you can get them at yard sales and “other” places. The kids will use them, I have seen them raise their bed on cinder blocks and stack the crates on their sides, like cubicles. I have also seen it done, on either side of a desk with a board across to make space for more “stuff”
Oh and I just realized, it’s that time of the year, the graduating seniors are just about to empty their dorm rooms, so….I bet you could get some really cool deals about now!
One thing to be careful about as my neice experienced she bought a second hand book, somewhere on -line and some of the pages were missing, >:(
Better to buy them after you see them!
Have fun in the hunt!