Carrying cases, holders, protective cases and stands featuring power supply connectors, adaptors, speakers and battery charging devices, specially adapted for use with handheld digital electronic devices, namely, cell phones, MP3 players, personal digital assistants; Smartphone mounts; PC tablet mounts; Adjustable smartphone and PC tablet stabilizers and mounts; Adjustable magnetic mounts for smartphones for mountain biking, videography; Mounts for PC tablets; Mounts for smartphones; Stands a...