I came across this reading list, and as it is long, I thought it would be worth sharing. Who knows, maybe my idea of long is short to you?
I decided to group the list into categories and comment on it. If you feel up for the challenge, I'd say that one book can account for more than just one point. Good luck!
Here goes:

GENRE AND SUCH
A classic romance
A funny book
A mystery/thriller
A book of short stories
A book that scares you
A memoir
A trilogy          (I wonder where you could find one these days? :D)
A book that made you cry         (TFIOS anyone?)
A book with magic
A graphic novel
A play            (How about Shakespeare?)
A book with a love triangle
A book with nonhuman characters

SETTING
A book set in a different country          (Not a challenge if you're not American)
A book set some place you've always wanted to visit            (Anyone have any books set in Monaco?)
A book set in the future
A book set in high school

AUTHOR
 A book written by someone under 30
A book by a female author       (Is it just me, or is this a bit sexist?)
A popular author's first book
A book that you haven't reaf from an author you love
A book by an author with the same initials as you

TITLE
A book with a number in the title
A book with a one-word title
A book with antonyms in the title
A book with a color in the title

PUBLISHED
A book published this year
A book over 100 years old            (I can imagine the soothing smell of old books)
A book that came out the year you were born
A book from your childhood

BASED ON
A book that is based on/became a movie            (As if that would be hard to find)
A book based on a true story
A book based entirely on its cover           (Sounds interesting)
A book based on/turned into a TV show

REPUTATION
A book a friend recommended
A Pullitzer Prize-winning book
A book your mom loves               (Let's hope she reads books)
A book with bad reviews
A banned book           (I feel like a rebel already)
A book you can finish in a day

GIVE IT A TRY
A book that you were supposed to read in school but didn't            (Honestly I don't think there's a book like that)
A book you started but never finished
A book with over 500 pages
A book at the bottom of your to-read list

After typing "a book" that many times I have finally reached the end of the list.
I would love to hear from you if you take up the challenge or even just one category!

-Anna