1. Online tutoring: With the increasing demand for remote learning, starting an online tutoring business can be a lucrative opportunity. You can offer tutoring services in various subjects or specialize in a niche area. Platforms like Tutor.com and Wyzant can help you connect with students.

2. E-commerce store: The growth of online shopping continues to create opportunities for small businesses. You can start an e-commerce store selling niche products or unique handmade items. Platforms like Shopify and Etsy make it easy to set up and manage an online store.

3. Digital marketing agency: As businesses increasingly rely on digital marketing, starting a digital marketing agency can be a profitable venture. You can offer services like social media management, search engine optimization (SEO), content marketing, and pay-per-click (PPC) advertising. Examples of successful digital marketing agencies include Neil Patel Digital and WebFX.

4. Meal prep and delivery service: With people becoming busier and more health-conscious, a meal prep and delivery service can cater to their needs. You can offer pre-packaged, healthy meals delivered to customers' homes or offices. Companies like Freshly and Blue Apron have achieved success in this space.

5. Mobile app development: The demand for mobile apps continues to rise, creating opportunities for small businesses. If you have programming skills, you can start a mobile app development company. You can create apps for various purposes, such as gaming, productivity, or e-commerce. Examples of successful mobile app development companies include Fueled and Y Media Labs.

6. Personal fitness training: With the growing interest in health and fitness, starting a personal fitness training business can be a rewarding choice. You can offer one-on-one or group training sessions, either in-person or online. Certification from organizations like the National Academy of Sports Medicine (NASM) can enhance your credibility.

7. Subscription box service: Subscription boxes have gained popularity in recent years, offering curated products delivered to customers' doors on a recurring basis. You can create a subscription box service around a specific theme or niche, such as beauty, fitness, or pet products. Examples of successful subscription box services include Birchbox and FabFitFun.

8. Virtual assistant services: Many businesses and entrepreneurs require assistance with administrative tasks, making virtual assistant services in high demand. You can offer services like email management, scheduling, research, and social media management remotely. Platforms like Upwork and Freelancer can help you find clients.

9. Eco-friendly products: With increasing environmental awareness, starting a business focused on eco-friendly products can be a profitable venture. You can sell sustainable and eco-friendly products like reusable straws, bamboo toothbrushes, or organic skincare products. Companies like Package Free and EarthHero have found success in this space.

10. Pet services: As pet ownership continues to rise, offering pet services can be a lucrative small business idea. You can offer services like dog walking, pet grooming, pet sitting, or even specialized services like dog training or pet photography. Platforms like Rover and Wag can help you connect with pet owners.

Remember, before starting any business, conduct thorough market research, create a solid business plan, and consider seeking professional advice to increase your chances of success.