The "bus driver" exercise is where you hold a plate at arms length in front of you and rotate slowly. It's a hugely underrated movement. It's an excellent way to finish the shoulder workout and make the joint more resilient to injuries.
Start with a 10 or a 25 and work your way up to 45 pounds.
Instead of using one dimensional thinking and throwing rocks by doing cyclical modes of cardio, why not try to cover as many needs as possible in a short period of time with a circuit of exercises?