A panda jail. Madoka already knows what Romeo means before the boy clarifies himself, but just the thought of it. Pandas in little prison uniforms..

"Maybe we can call it a panda daycare instead? That sounds nicer!" And hey, kids also aren't allowed or supposed to escape from daycares, so it just works.

"Do you think they're good at climbing? Maybe if we just had some sort of fence that was tall enough.."