Griffin has announced its MouthStick Stylus ($30), a stylus affixed to a mouthpiece that allows people with fine motor impairments to use digital devices. The MouthStick Stylus was designed in collaboration with physicians and people with physical disabilities. It works with touch screens, laptop keyboards, and Apple’s Magic Trackpad. The mouthpiece holding the rubber-tipped aluminum stylus is made from food-grade stainless steel and comes with…