A companion to the uproarious Bunny Cakes , this is a very funny birthday story. Max and his sister, Ruby, are shopping for Grandma's birthday present. Ruby has saved up a walletful of money, and, as usual, she's in charge. Or she thinks she is. She has plans for an elaborate gift, but Max is sure that Grandma would prefer a set of gorgeous glow-in-the-dark vampire teeth, and he tries them out. The money slowly gets used up as Max gets thirsty, hungry, and messy (they have to spend three dollars at the laundromat), but in the end, there's enough for them each to buy a perfect gift. In the final glorious picture, Grandma is thrilled to play Ruby's musical bluebird earrings and to wear Max's vampire teeth all the way home. Wells' ink-and-watercolor illustrations show the sibling edginess and the shopping scenarios with economy and zest: one frame pictures the green vampire teeth on the shelf, pointing at an enthralled, wide-eyed, huge-eared Max. Children will also enjoy keeping track of the money as the wallet empties out. On the endpapers there are pictures of one-and five-dollar bills, with various bunny portraits in place of George Washington and Abraham Lincoln. Some show Max and Ruby; others show celebrity bunnies, from Martina Navratilova and Eleanor Roosevelt to Desmond Tutu. Wells suggests that grown-ups help kids photocopy, paste, count, and shop with the bunny money. Be sure to add this to the Booklist bibliography "Beginning Math Books" . Hazel Rochman