1x2 Gridfinity tray for storing the excellent Baking Sheet Stackers by LowLight, (specifically the designer's print profile), so they weren't loose in my cupboard. 

Note on size and fit

Each tray holds one set of four stackers. The stackers as designed are a very snug fit in this tray to allow four 20 mm wide stackers to fit within two Gridfinity units (80 mms inside 84 mm.) 

I tested multiple iterations to find a design that held onto the stackers firmly but had enough flex to allow them to be inserted and removed with minimal effort. Because the edges of the tray are more rigid, you may find it easiest to remove the stackers in the centre first and insert them last. 

Filament 

The stackers and tray have been printed and tested in PLA Basic. Because the tolerances on this are so tight and there is very little clearance your printer and filament choice needs pretty good dimensional accuracy, or this may not fit. I cannot vouch for this working in PETG or another filament with greater shrinkage.