A kitchen drawer tray that I designed to fit my “junk drawer” in my kitchen to help keep things organized.  This fits in my particular drawer in a 2x2 arrangement (two side by side in back, with two more side by side in front) and I've added strength via stiffeners and a strong top edge to make it robust to pulling the trays in/out to access items inside.  I print these in PLA at 0.3mm layer height using an 0.4mm nozzle and they are plenty strong for their purpose.