Do a 1,000 piece puzzle.
Start binging a new TV show.
Host or go to a game night.
Make and then listen to a playlist of all of your favorite songs.
Or just do that thing where you play a song just before midnight, so that the best part plays right at 12 a.m. on Jan. 1.
Or if that's too daunting, do your laundry.
Learn the choreography to Justin Bieber's "Sorry."
Get Chinese takeout and watch Planet Earth 2 or another documentary.
Make a list of all of your personal wins and best moments from the year.
Try getting your email inbox down to zero, if that's something you've been wanting to do.
If you're not interested in that, then unsubscribe from all those mailing lists that keep spamming your inbox.
Take a nice, long bath with some salts or bubbles.
Eat some fun and delicious cheese.
Make that Pinterest recipe you’ve had saved all year.
Say "fuck it" to staying up until midnight and go to bed early.
Catch up on all the articles you wanted to read, but never got around to.
Although, if you want to start or read a book, now's also a good time to do it.
Finally download that damn update for your computer.
The same goes for your phone.
Get the tattoo or piercing you've been thinking about getting.
Go see a midnight screening of a movie.
Write letters to your friends.
Write a letter to yourself.
Treat it like you would the the last day of any other month, and do...whatever.