Tom's Rare Play Book includes many of the suggestions for additional rare plays that have been asked for here on the forum in the past, including more variety in the Bases Empty section, rain outs, and an assortment of interesting wrinkles that should make going to the Rare Play Book more fun than ever.
I hope you give these a try! The file is in .pdf format, converted from our Excel conversion of Tom's originals, and will print on 10 pages.