Sasha and Malia Obama don't have to wait for their new dog to arrive to have fun at their White House: their parents surprised them yesterday with a new swing set right near the Oval Office. The Chicago Tribune reported that the first daughters "squealed with delight when they saw the set and played on it for almost an hour" despite the chilly weather. The swing set is a "Rainbow Castle" design by South Dakota-based Rainbow Play Systems Inc. Though the set-up is not that extreme apparently, the paper reports "the cedar and redwood playground boasts four swings, a slide, a fort and a climbing wall. It also has a picnic table with brass plates etched with the names of all 44 presidents."