One of the coolest art organizations in Brooklyn, Open Source Gallery is an arts-based nonprofit inspired by the open source movement and the intersection of art and community. Every year, it hosts a month of free, open-to-community dinners cooked by artists and volunteers through December. On Christmas Eve, the dinner will be gluten-free vegan chili with cornbread and baby cheeses, and the discussion will center around painting, sculpture and ceramics. Either sign up to volunteer (thus guaranteeing your place) or just show up.

• Free Christmas Eve Dinner & Art Details