The present disclosure relates to a lawn sweeper designed to collect debris, such as grass clippings and leaves, from a surface such as a lawn, and more particularly to a lawn sweeper with an adjustable brush assembly and characteristics associated with improved storage of such a device. A user may adjust the brush assembly with respect to the housing without needing to move the wheels. The hopper assembly may include a panel movable to be placed in at least two orientations, thereby allowing a user to change the volume within which the hopper assembly may collect debris. Methods are also disclosed for adjusting the brush assembly and for storing a lawn sweeper unit.