Looking at something related to medicine or health care? What about the California Medical Association? The environment? What about the Sierra Club or the approximately 855,678 other environmentally-focused organizations in California. National Transportation Safety Administration? Insurance Institute for Highway Safety? Chances are, if you’re looking at a policy area, there’s a group out there researching that area as well.
Try googling Your Idea + “model legislation.” You might find some ready-made language that, of course, you would cite, customize, and build from and not just cut & paste as pass off as your original work (right?).
Don't forget to track your research!