To add a unique activity to your college application and resume, enroll in a MOOC (Massive Open Online Course) in subjects ranging from essay writing to nanotechnology.
A MOOC is simply an online course with the capability to serve a large number of students (for example Stanford’s initial MOOC in 2011, Introduction into AI, enrolled 160,000 students) with open access via the web. Supplementary learning materials may include videos, lectures, e-books, or problem sets.