Just give it back when you come back, is the only catch. But the coat will even fend off flame. I'm not sure exactly what to call Harry, he vanished before we came here. When I found out I was pregnant with Henry. But Harry was a very powerful wizard. And not the Potter sort. Be careful with the staff, it should work just because you're a magic user, but you have to focus on what you're using it on. If you lose focus it will come back at you.
Sheilds, protective circles, blinding light, that sort of thing. I'm really good at shorting out electrical stuff.