Insurance for Sketchup Business

To all my fellow U.S. Sketchup users who have a design business. I have just registered my business, 3D Montana LLC, with the state of Montana. I do basic renderings and blueprints for my customers. My prints clearly state that the prints are for visual representation only and not for construction or engineering uses. My question to you is, If you have a business similar to mine what type / kind of insurance do you have for your business and why? TIA and have a good one.