Containment systems, containers, and methods can be comprised of first through fourth sidewalls; a bottom wall connected to the first through fourth sidewalls; and first through fourth lid flaps connected to respective first through fourth sidewalls via respective first through fourth hinges. A single sheet of paperboard can make up the sidewalls, the bottom wall, and the lid flaps. In a fully open configuration, the third lid flap can be folded at the third hinge such that a flap body thereof is adjacent to the third sidewall, the fourth lid flap can be folded at the fourth hinge such that a flap body thereof is adjacent to the fourth sidewall, and a flap wing of each of the third lid flap and the fourth lid flap can be under the bottom wall such that each of the flap wings is against the bottom wall and maintained under the bottom wall.

A foldable container moveable between a flat configuration and a three-dimensional configuration is provided. The container includes a first panel having a first engagement feature, a second panel having a second engagement feature, and a third panel having a third engagement feature. The first engagement feature is configured to engage with the second engagement feature so as to secure the container in the three-dimensional configuration. The first engagement feature is also configured to engage with the third engagement feature so as to inhibit the first engagement feature from becoming disengaged from the second engagement feature.

The insert includes a base, the base including at least one depression that defines a cavity, the at least one depression including a floor with walls, the walls including a first pair of opposing walls and a second pair of opposing walls, the first pair of opposing walls each defining an undercut, the undercut including a lower inclined segment and an upper inclined segment that join at an apex, the apex of the undercut for each of the first pair of opposing walls facing each other, and a lid connected to an upper brim of the base, the lid covering the cavity.

The insert includes a base, the base including at least one depression that defines a cavity, the at least one depression including a floor with walls, the walls including a first pair of opposing walls and a second pair of opposing walls, the first pair of opposing walls each defining an undercut, the undercut including a lower inclined segment and an upper inclined segment that join at an apex, the apex of the undercut for each of the first pair of opposing walls facing each other, and a lid connected to an upper brim of the base, the lid covering the cavity.