Oh, a great many things! You can use them to fly, if you collect enough in one place and have them lift up some loose clothing like a cap or overcoat. [ she counts this off on her finger ] They can be used to channel the erase of memory through, we use them to maintain the barrier in the same capacity... you can use them to spy on key locations around town, and I know little Anju's even trained a number of them to go out during the day.