At least Riku gives that comment some thought before he answers.

"Nah," he replies, "Don't think it's something Rastus can bring on the ferry," sounds fairly mysterious, if only because Riku doesn't offer any other hints, just reaches over to pull one of the coloring pencils out of the set, testing the sharpened tip just for a thing to occupy his hands.

"You know," Riku adds, "I used to know someone else who was good at drawing, too."