kb999999: I lined some with contact paper/some without, then placed like-items inside and stored back on the shelves. Also, I have been using this idea in my pantry to hold bags of pasta, beans, rice, seasonings, ect ... it is so much easier to locate items now and no more messes to keep cleaning up after.
I recently found a box that fits in one section of my pantry to hold beans, peas, barley and the like. It sure makes it easier to store and find those bags of things.
I have a side table/shelf in the bedroom that's a sturdy divided cardboard box, covered with contact paper. I've used it ever since we moved here, eight years ago.
Cardboard is amazingly sturdy.