I have a rack made from MDF for all of my plate/sheet materiel, all stored vertically as this makes it easier to access I use varying sizes/lengths of 50mm plastic/UPVC plumbing pipe for my bar storage. In eachof the shorter tubes, there is an phenolic disc attached to a central rod. If there is a small piece in the bottom of the tube, I simply pull in the rod and ‘extract’ teh small bits. I make sure the longer lengths go in the appropriate longer tubes. THe tubes are held in an MDF frame which is on castors so can be easily moved around as needed. A small box on the side takes care of all of the smaller offcuts, if it isn’t swarf it doesn’t get wasted – simples
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P.S. I have the luxury of a 5M x 5M workshopw with a 5M x 3M woodshop behind, I feel very spoilt That said, there are still sa lot of improvements to be made to utilisation of space as and when funding/ traction engine/SWMBO allows