I've been particularly dreary of late, so a recommended read for the youngest set:
The Teeny Tiny Ghost And The Monster by Kay Winters, illustrated by Lynn Munsinger (HarperCollins, 2004). The third and latest in Winters' and Munsigner's Teeny Tiny Ghost Books is a not-so-frightful delight and a celebration of the creative spirit. Ages 4-up. Look also for the previous books in the series: The Teeny Tiny Ghost and Whooo's Haunting The Teeny Tiny Ghost.