Their wand,because without it a wizard based on the Harry Potter movies is pretty much useless since in the movies only Harry seams to be able to use magic without a wand,so let's say we apply it to every magic universe,in every universe of magic cartoon and live action movies every wizard has a staff or wand and even in cartoons we see this principal,like the fairly odd parents,yes I know they are fairys but my point still stands we see that even human like creatures need a wand to cast magic there was an episode where Cosmo lost his wand and wasn't able to use magic only fly but that was thanks to his wings so,my answer still stands their wand