1. A book made into a move you've already seen
2. True crime
3. The next book in the series you started
4. A book involving a heist
5. Nordic Nor
6. A novel based on a real person
7. A book set in a country that fascinates you
8. A book with a time in a day in the title
9. A book about a villain or antihero
10. A book about death or grief
11. A book with a female author who uses a male pseudonym
12. A book with an LGBTQ + protagonist
13. A book that is also a stage play or musical
14. A book by an author of a different ethnicity than you
15. A book about feminism
16. A book about mental health
17. A book you borrowed or was given to you as a gift
18. A book by two authors
19. A book about or involving a sport
20. A book by a local author
21. A book with your favorite colour on the title
22. A book with alliteration on the title
23. A book about time travel
24. A book with a weather element in the title
25. A book set in a sea
26. A book with an animal in the title
27. A book set on a different planet
28. A book with a song lyric in the title
29. A book about or set in a Halloween
30. A book with a character who are twins
31. A book mentioned in another book
32. A book from a celebrity book club
33. A childhood classic you've never read
34. A book that is published in 2018
35. A past Goodreads Choice Awards Winner
36. A book set in a decade you were born
37. A book you meant to read in 2017 but didn't get to
38. A book with an ugly cover
39. A book that involves a bookstore or a library
40. A favorite prompt from 2015, 2016 or 2017 POPSUGAR Reading Challenges
41. A bestseller from that year you graduated in high school
42. A cyberpunk book
43. A book that was being read by a stranger in a public place
44. A book tied to your ancestry
45. A book with a fruit or vegetable in the title
46. An allegory
47. A book by an author with the same first or last name as you
48. A microhistory
49. A book about a problem facing society today
50. A book recommended by someone else taking the POPSUGAR Reading Challenge