Short Books

My friends and I are going to a reading rave at the and of the month and are brainstorming what we want to read. The event itself is during about 2 hours and we are searching for a book that we could finish within this time period. We've done something similar bevor with Graveyard Shift by M. L. Rio and really enjoyed it. I think the book should be somewhere between 100 to 150 pages and somewhat easy to read. Does anything come to your mind? Thank you for your help!