Read-a-thon
general journal junk
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idealog
Do an alphabet challenge where you read a book for each letter of the alphabet - going by title or author - maybe do both.
You could also take a different tack and read around the world by choosing one book from each country. If you've read a lot from other nations, try to do something different than you're used to reading.
If you keep a reading journal, think about adding printouts of the book's cover to the entry about each book.