Tiny room workout plan.

Due to circumstances beyond my control I will be confined to a small room (space enough to do pushups) for long periods of time for a while. To fend off insanity and lethargy I want to develop a workout program for myself. I will not have access to weights, nor be able to run for cardio. Please list exercises and what muscle group they target for a complete workout. (bonus points if they don’t make much noise)