A cross device may include a bottom wall, a first sidewall being pivotably connected to the bottom wall, a second sidewall being pivotably connected to the bottom wall, a third sidewall being pivotably connected to the bottom wall, a fourth sidewall being pivotably connected to the bottom wall, and a top wall being pivotably connected to the first sidewall. The cross device may be movable between a first position in the form of a cross and a second position in the form of a rectangle.