I have a bunch of feather dusters that came as hitchhikers from the live sand i got from a friend. There were 2 that were tiny and i about 2 months have grown to be a little smaller than the size you'd buy at the lfs. They also rarely retract their feathers (lionfish and dog face puffer will swim in them too!) If i find anymore large ones i'd be glad to ship some to anyone who wants 'em