A small box with a hinged lid. Thin walls and very small hinges give it a delicate look — the hinges seem to disappear when the lid is shut — but the hinges are sturdy and smooth. Prints in place: no supports needed.

Printed in PETG using 0.15 Quality settings in PrusaSlicer. (Update: This prints beautifully on a Prusa i3 Mk3S, but the top snapped off when I tried to print it on a Prusa Mini. I changed the filament to a fresher roll of PETG and it printed successfully.)

Update: Check out this improved set of boxes with added latches, smooth corners and the same hinge mechanism.