Various adjustable cannula systems are provided. The worm wheel includes a tooth having a tooth crest. A chalk block holder is received in a housing recess and a housing holder has a belt clip for convenient storage of the dispenser. The skill game device is configured to allow a game player to play a skill game having a skill game outcome. The battery management module is operable to receive the user-input allocation and the battery capacity signal, and to selectively disable each subsystem circuit or function when each subsystem circuit or function has depleted its allocation of battery capacity. The gas provides antimicrobial andor antiodor protection to objects in contact or in proximity to the interior surface of the article andor to objects in contact or in proximity to the exterior surface of the article.