Some small business ideas have little upfront investment, but require immense hustle to serve their customers. When starting a brick and mortar laundromat, you will pay upfront for the equipment and building lease, but having a storefront can often lure in customers easier than not. Yes, it will still take hustle, but this is a service that never goes out of style.
If you need a more affordable way to start up, consider opening a from-home laundry service or a mobile laundry service where you pick up laundry around your city, take it home to wash, dry, press, and fold and then deliver it back to your clients.