Starting a business with $100 or less may seem like a daunting task, but there are many ideas that you can pursue that require minimal upfront investment. Here are 10 business ideas that you can start with $100 or less:

1. Freelance writing: Offer your writing services to blogs, websites, and other publications. All you need is a computer and an internet connection.
2. Social media management: Many businesses need help managing their social media accounts. Offer your services to manage their social media presence for a fee.
3. Online tutoring: Online tutoring is a growing field, as more and more students are turning to online learning. You can offer your services to students of all ages, from elementary school to college. You can specialize in a particular subject, or offer general tutoring services. To get started, you can create a simple website or social media page to promote your services, and use online platforms like Zoom or Skype to conduct your tutoring sessions.
4. Graphic design: If you are skilled in graphic design, offer your services to businesses and individuals who need logos, business cards, and other design work.
5. Personal shopping: Offer your services to people who don’t have time to shop for themselves. You can charge a fee for your time and expertise.
6. Pet sitting/walking: If you love animals, offer your services as a pet sitter or dog walker. You can start by advertising your services to friends and family.
7. Cleaning services: Offer your cleaning services to homes and small businesses. You can start with basic cleaning supplies and expand as you grow.
8. Lawn care: Offer lawn care services to homeowners in your community. You can start by using your own lawn care equipment and expand as you grow.
9. Virtual assistant: Many businesses need help managing their administrative tasks. Offer your services as a virtual assistant to handle emails, scheduling, and other administrative tasks.
10. Handmade crafts: If you are skilled in making handmade crafts, you can sell your products online or at local markets. Use low-cost materials and start small, then expand as you grow.

Overall, these are just a few examples of businesses that can be started with a small investment of $100. The key to success is to find a business that you are passionate about, and to be creative and persistent in your marketing efforts. With hard work and dedication, you can turn a small investment into a successful business.

It’s difficult to determine which of these business ideas is the most profitable, as profitability depends on many factors such as market demand, competition, and pricing. However, some of these ideas have the potential to be more profitable than others, depending on various factors. Here are a few examples:

1. Online tutoring: as described above you can offer online tutoring services through platforms like Zoom or Skype. All you need is a computer, internet connection, and a website or social media presence to promote your services. it is the most profitable idea and most convenient one as well
2. Graphic design: Graphic design can be a profitable business, as there is a high demand for creative services in various industries. However, the profitability of the business will depend on factors such as the quality of your work, the rates you charge, and your ability to market your services effectively.
3. Personal shopping: Personal shopping can be a profitable business, as many people are willing to pay for personalized fashion advice. However, the profitability of the business will depend on factors such as your ability to build a client base, your fashion expertise, and the rates you charge.
4. Lawn care: Lawn care can be a profitable business, as there is a high demand for lawn maintenance services. However, the profitability of the business will depend on factors such as the size of your service area, the rates you charge, and your ability to provide high-quality services consistently.
5. Social media management: Many small businesses struggle with managing their social media presence. If you have experience with social media, you can offer your services to businesses in your area. You can start by creating a website or social media presence to promote your services.
6. Handmade crafts: If you have a creative side, you can start a business selling handmade crafts. You can sell your items on platforms like Etsy or at local craft fairs. With a small investment in materials and some marketing efforts, you can start a business selling unique and personalized items.
7. Pet care services: If you love animals, you can start a business offering pet care services such as dog walking, pet sitting, or grooming. You can advertise your services in local neighborhoods or on social media.
8. Cleaning services: You can start a cleaning business with just a few basic cleaning supplies. You can offer your services to both residential and commercial clients and advertise on social media or through flyers in local neighborhoods.
9. Social media influencer: If you have a large following on social media, you can become an influencer and earn money through sponsored posts, affiliate marketing, and brand partnerships. To get started, you can create quality content that engages your audience and build a strong following on platforms like Instagram, YouTube, or TikTok.
10. Personal chef: If you have a passion for cooking, you can offer your services as a personal chef. You can prepare meals for individuals or families, or cater for events. To get started, you can create a website or social media page to promote your services and reach out to potential clients.

Ultimately, the profitability of any business will depend on many factors, including your skills, experience, market demand, competition, and pricing strategy. It’s important to thoroughly research your business idea, understand your target market, and create a solid business plan that takes into account all the necessary expenses and potential revenue streams. With dedication, hard work, and a bit of smart marketing, any of these business ideas has the potential to be profitable.