Dana's Idea: Super Genius
I always loved those characters in the cartoons who had a secret laboratory and could flip a switch to change their room back into a "normal" kid's room. I am thinking of A.J. from Fairly Odd Parents and Dexter's Laboratory. It is esentially what I did here with Agent S's room but you can't see the laboratory. Agent S does her homework, watches TV and plays board games with her friends. I gave her a typical kid's room with a some training equipment because she hopes to be a superhero one day.