There are many traditional Drewmas activities but don’t be afraid to start your own!
Drewcake (this is basically just an excuse to eat cake but ideally it would be decorated accordingly).
Listening to Drewisc (Ideally music actually sung by Drew but any musical content is acceptable)
Singing traditional Drewmas songs, of course.
WTF Gift Exchange (Something weird you were gifted for Chistmas or stuff you have lying around the house are good choices.
Games! (again, basically just an excuse to play games)