It's a surprising request, both of Sirius's eyebrows rising as he considers it before nodding as he drops his hand away.

"Could, yeah," he says. "Could do it right now even if you wanna scare the pants off a few Muggles." He doesn't bother keep a smile from creeping onto his lips then as he waggles an eyebrow. "Do you want to keep a piece or two, is that it?"

He hasn't a clue what Kieren might do with them, of course. Lay about him flat, maybe, a constant morbid reminder. Then again, if it helps him in some way, Sirius won't stop him. Couldn't even if he wanted to besides.