He's quick to turn towards the bathroom... but instead of moving, he picks up one of Mary's crayons from the floor.

"Shambles."

And suddenly, instead of a crayon, he's holding bandages. (Hopefully someone will remember that the blue crayon is in the bathroom, the next time Mary needs it...)

"Is there anyone here who knows about technology?" Unfortunately, he only knows about fixing people, not things. As they talk, he's already started to unwrap the bandages. He frowns when he gets a good look at the arm, but sighs, "At least it didn't seem to be infected. Which is a minor miracle."