7 pm-7 am, March 17. Ages 5-13 are invited to an overnight. Features include bounce houses, pizza, swimming, scavenger hunts and leprechaun fun. Bring a swimsuit, towel, sleeping bag and pajamas. At Franklin Athletic Club, Southfield. $60 each; $10 more to stay till 9 am. RSVP: Laura, email@example.com or 248-352-8000, ext. 314.