"Somebody better with Charms than us," Hannah said with a wry grin. "I'm sure someone can figure it out, now that we've found the charm. We've still got to find something to multiply them, or link them all together so that if one changes the others do, but this is the hardest part done, I think! Should we work on the other half now, or let them get a start on this before we go any further?" She wasn't sure what sort of application might work best for them - Neville or Ginny ought to decide, Hannah thought - or whether they would need to apply the Protean Charm to each object, or to just one before replicating it.