I have been using dishes (plates and bowls) while building brick sets. My son came up with this idea and we have been using it to build sets. The small areas are for the small part bags that are usually in the main bag. Two sizes included to work with a A1 mini or larger printers.

Large Tray: 240 x 240 x 18 mm

Small Tray: 170 x 170 x 18 mm