A portable and affordable braille reader would be great. I had a couple of blind students in my calculus course a couple years ago, and screen readers are just not a good substitute (too slow and hard to understand when there are a mix of words and equations). This is especially the case in timed assessments like exams and quizzes, but even for homework it is a serious obstacle for the students.

Now, if there were only a FOSS tool to compile tex into Nemeth...