When playing The Free And Easy Day in New York bonus level, go to Romando. Speak to Kayama-kun then enter the following Keitai Club passwords to get the corresponding bonus.

Gemini's Battle Uniform Bromide: 518389656658
Ratchet's Special Bromide: 398210448078
Taiga's Star Bromide: 322934212158
Taiga's Battle Uniform Bromide: 364684015878
Gemini's "Boku no Yume" theme as a Cameratron alarm in the options: 947450159208