The Wiggle Add-on is a tool that allows you to quickly add noise based movement to objects with a click. You can change the strength, speed and influence on both the rotation and location. The wiggle add-on operates on the delta transforms which makes it so the wiggling goes on top of your already existing animation. Hopefully this'll improve your workflow :)

I used it extensively on my short film Impetus to add detailed movements to decorations, grass, trees, characters, camera movement or hanging jewelry. Micro details and noise based animation is a great way to improve your realism.