Implementations herein may involve a packaging system including a first box part including a plurality of lid walls, where a first lid wall comprises an aperture and a latch slidably disposed within the aperture. The packaging system may also include a second box part having a plurality of tray walls, where a first tray wall comprises a channel sized to slidably receive the latch. The channel may include an assembly channel segment and a locking channel segment, where the assembly channel segment intersects an edge of the first tray wall. Further, the second box part may be configured to fit within the first box part such that a) the assembly channel segment is aligned with the latch when the latch is in a first position within the aperture, and b) the latch is slidable within the locking channel segment to a second position.