WHEN-00:05:18; Just after Dorothy takes the cruller and before singing "Over the Rainbow";

As Dorothy walks along the side of the building and Aunt Em says the words "...help us out today...", notice the wagon wheel leaning against the corner of the structure. Also notice that the fence just beyond the wheel has a broken top rail. In the next shot, a paddle magically appears and is now leaning against the wheel and the fence is repaired.