Groups of Four (submitted by karat)
Since 4×4 = 16, read books that are related to these groups of four.
Four seasons (spring, summer, autumn and winter)
– Read 1 to 4 books that have spring, summer, autumn or winter in the title. Or read 1 to 4 books that are set mostly during one specific season
Four great elements (earth, water, fire and air)
– Read 1 to 4 books where the hero or heroine works with the earth (gardener, famer, etc), or where the hero or heroine is a firefighter, or is/was in the Air Force or Navy. Or read 1 to 4 books where the characters have powers related to one of the great elements. Or read 1 to 4 paranormal books.
Famous bands: many famous bands, like The Beatles, U2 and Rolling Stones (currently) have four band members
– Read 1 to 4 books where the hero or heroine is a musician or likes music. Or read 1 to 4 books where the hero or heroine is part of a band or a team.
Four compass points (north, south, east and west)
– Read 1 to 4 books set “north” (Canada, Alaska, Iceland, Scandinavia, the Northern U.S. States America, etc), “south” (Antarctica, New Zealand, South Africa, South America, etc), “east” (Asia, U. S. East Coast, etc) or “west” (U. S. West Coast, Western Europe, etc)
Four suits of playing cards (hearts, diamonds, clubs, spades)
– Read 1 to 4 books with the word heart, love, passion or any other similar word in the title. Or books where the hero or heroine is wealthy. Or books where the main characters live near to, or travel to, a wooded area. Or books where the hero or heroine is a fighter, warrior or is in the military. Or read 1 to 4 books where the hero or heroine are gamblers, or own/work for a gambling house or casino.
Four cardinal virtues (justice/fairness, prudence/wisdom, temperance/restraint, courage/fortitude)
– Read 1 to 4 books where the hero or heroine has one of these virtues.
Final four: last four teams remaining in a playoff tournament. Most common use is the “March Madness” Final Four
– Read 1 to 4 books where the hero or heroine plays sports, is a sports fan, or is in a competition
Four Seinfeld Characters: Jerry Seinfeld, George Costanza, Elaine Benes and Cosmo Kramer
– Read 1 to 4 books where the hero or heroine has a best friend who is a relevant secondary character. Or read 1 to 4 books where the heroine reunites with her ex. Or where the hero and heroine are neighbors. Or read 1 to 4 funny romances.
Four Sex and the City Characters: Carrie Bradshaw, Samantha Jones, Charlotte York and Miranda Hobbes
– Read 1 to 4 books where the hero or heroine is a writer or journalist, or a publicist, or a business owner, or works with artists or other famous people, or is a lawyer. Or read 1 to 4 books where the hero or heroine likes fashion and/or is usually well-dressed. Or where the heroine is older than the hero. Or where the hero or heroine is divorced. Or where the hero or heroine is a parent.
Four Time Zones used in the contiguous U.S. (Eastern, Central, Mountain, Pacific)
– Read 1 to 4 books set in these time zones. Or read 1 to 4 time travel books
Series of Four Books
– Read 1 to 4 books that are part of a series of four books
One out of Four
– Read 1 to 4 books where the hero of heroine is part of a group of four people (e.g. four best friends, like Mary Jo Putney’s Fallen Angels; four band members, like Nalini Singh’s Schoolboy Choir; four partners, like Nora Roberts’s Bride Quartet, etc)
– Pick your own “Group of Four” and read 1 to 4 books related to the Group you selected.