Boston, one of the country’s most beautiful cities during the summer, gets dark and cold during the Winter. We thought it would be fun to pull together a list of exciting activities to help us get through January! Free Thursday Nights at the ICA While the MFA’s free on Wednesday nights, the ICA offers free admission every Thursday evening. Stop by this month to check out Adriana Varejão’s work, which explores anthropophagy, the concept of cultural cannibalism. Free, Thursdays, 5-9 p.m., 100 Northern Ave., Boston, 617-478-3100, icaboston.org. Berklee High School Jazz Festival Berklee College of Music is quite the jazz hub. While the popular BeanTown Jazz Festival isn’t until September, you can still get your fill of lively—and competitive—jazz performances this month at the Berklee High School Jazz Fest, where ensembles of all sizes will Duke Ellington it out (sorry,…