Another excellent bodyweight exercise are hanging ring flyes
I usually do ring flyes and then do ring pushups immediately after:
Triceps: I've become more and more fond of the one arm pushup over the years. In my upcoming book, I will go over exercise progressions that will help you achieve a one arm pushup.
Quadriceps: One-legged squats require you to exert total body control, because if you don't, then you'll fall flat on your ass. If you can't do them or you can't go all the way down, then you can do them with the help of a pole. People will think you're training to be a stripper, but who cares what they think
Hamstrings: The Platform Deadlift is my favorite hamstring exercise. It is also a good back exercise. Your midback will get incredibly thick from this exercise. Do platform deadlifts for awhile, and your weights will shoot up when you switch back to regular deadlifts without a platform
Abs: Hanging leg raises (HLR) are my favorite ab exercise, but if you don't have access to a bar, then you can do the HLR's cousin, the Dragon Flag