The moment something hits the ground, Vincent startles and takes a couple of steps out of the room. Robin also looks surprised, but his inclination is to freeze while a bunch of little things go skittering all over the floor.

"Oops," he says, "Guess that was full."

"Full of what...?" Vincent asks, slowly straightening.

"...Stuff," is Robin's reply. "Ah..."

He bends down, picks up a couple of little bones and a bottle cap and a die that had bounced off the tub.

"Sorry, I didn't realize you were full of... things."

And now he's holding a few of them, and realizes he's not sure what to do with them. Honestly, some of this looks like trash... Maybe he'll put it in a pile for later?