The Northwest Columbia Heights Community Association is hosting a community holiday party this Monday from 6:30 to 8:30. Their email says "No speeches, no meeting program, just time to relax with your neighbors and enjoy holiday food, music, and cheer!", which sounds pretty good to me. The party is at St. Stephen's Church, 1525 Newton St NW in the downstairs cafeteria.
They're having some events too, like a home-baked cookie contest with prizes, a neighborhood talent show, and a canned food drive. For more info on the talent show, email firstname.lastname@example.org