A list of inspirational books is included in Appendix E of the D&D 5e Player's Handbook (PHB). This is an all-encompassing list of those books, for those who wish to read them. No time limit to this challenge, just enjoy yourself.

Note: I am leaving the Apprentice Adept series by Piers Anthony off of this list.

Note 2: I only put the first six books in the Legend of Drizzt series on this book, as it has many and is ongoing. If you want a complete and ongoing list of the books in the series, check out this reading challenge. The Legend of Drizzt Series | The StoryGraph 

If you are interested in other campaign settings novels, check out these reading challenges: