Starting a branding merchandise store is a really popular and successful route that merchants choose when staring a Shopify store.
If you have a brand already because you stream for example, or you have a following on social media then selling merchandise is a great way to monetize that.
If you don’t have a brand, you can create one by getting creative. It could be something really niche that has an alluring logo and design. It could be a movement you want people to buy into and invest in.
If you aren’t so creative but you know you can make a success of something if you have something to work with, you can hire creatives on places like fiverr or Upwork to bring your brand to life.