Yes, you can. Adding additional ingredients to bone broth is a great way to make bone broth part of your everyday life, as well as boost the nutritional content of your broth and add variety. You can also use bone broth in many recipes instead of water or stock. The Kettle & Fire Blog article below is a great place to start.(click on the image)
That being said, if you are following a specific diet, such as keto or detox, adding certain ingredients to your bone broth may not be beneficial because it could negatively affect those specific goals. It's best to read up on the specific requirements of the diet and add the recommended ingredients to your bone broth.