Watch the animated short The Lost Thing.
A boy discovers a bizarre looking creature while out collecting bottle tops at the beach. Realizing it is lost, he tries to find out who owns it or where it belongs, but is met with indifference from everyone else, who barely notice its presence, each unwilling to entertain this uninvited interruption to their day to day lives. For reasons he does not explain, the boy empathizes with the creature, and sets out to find a ‘place’ for it.