Stylus pens; computer styluses; styluses for use with electronic apparatus and devices, including mobile phones, smart phones, tablet computers, MP3 players, MP4 players, personal digital assistants (PDAs) and e-book readers; styluses for use with touch screen devices; mobile phone and smart phone accessories; accessories for tablet computers; accessories for portable and handheld digital devices, MP3 players, MP4 players, personal digital assistants (PDAs) and e-book readers