As a 15 year old, there are several business ideas that can be helpful in the future. Some of these ideas include becoming a virtual assistant, starting a pet-sitting or dog-walking service, offering social media management services, creating and selling handmade crafts, offering tutoring or homework help services, and starting a lawn care or landscaping business. These businesses can help develop important skills such as time management, customer service, and financial management, which can be useful in future careers. Additionally, starting a business at a young age can also provide valuable experience and a sense of entrepreneurship that can be beneficial in the long run.