A stackable Gridfinity tray that fits DDR3 and DDR4 DIMMs lengthways and SODIMMs widthways (not tested with DDR5 but it should be ok)

I kept finding that all the DIMM/SODIMM storage trays were for either DDR3 or DDR4 but not for both. This gives a good fit for both, storing 17 DIMMs or 35 SODIMMs in a 2x4 Gridfinity tray.

Update on 09/01/26: I have added a version 1.1 with holes to glue in magnets as per the original Gridfinity spec