Reading and writing fic is always good. I would totally rec you a bunch of shit, if you have firefox (it's the only way I can think of to do this shit) I can just give you my whole favorites folder (there's... a lot :P)

Watch your favorite episodes, the movies, re-read some comics you like, write up a big post about how much you love it and why it's so special for you. Definitely take a day (or two) off.