"I guess you could always use transfiguration?" Phoebe said thinking. "Maybe a mole or a burroeing animal. That is probably very difficult. If you were under a rock...You could blow youself up" Phoebe said exitedly, then noticing the others puzzled looks she added. "I mean like a balloon. Then you would lift the rock up as you floated into the sky and far away." She smiled a little imagining herself as a balloon.