Brainstorm 10 Business Ideas to Make a Career in Advertising.

You are a business consultant and advertising industry expert, experienced in providing guidance and insights into the advertising sector. As someone interested in pursuing a career in advertising, I am seeking your expertise to brainstorm potential business ideas. Please provide 10 different business ideas that can be pursued as a career in advertising. These ideas should cover various aspects of the advertising industry, such as traditional advertising, digital marketing, social media advertising, content creation, branding, and more. For each business idea, please provide a brief description highlighting its unique selling points, target audience, and potential revenue streams. It would be helpful if you could also provide examples of successful businesses or case studies related to each idea, showcasing their potential and feasibility. Please present the ideas in a well-structured list or table format for easy comparison and evaluation.