You could try advertising more, for example, by putting up signs around the neighborhood, posting about it on social media, or having people you know spread the word. You could also try doing it in a different neighborhood that might have friendlier people, or do it in a time and place where there's likely to be a lot of people walking around the area (e.g., near a church before the end of a mass).
A service like Paribus or Earny will help you collect refunds you're owed from stores. This is a great way to potentially put some extra earnings on autopilot because you're using an innovative tool to get a refund you deserve. When you make an on-line purchase at a Paribus monitored store (you can view the retailers they monitor here), Paribus engages with the retailer on your behalf and files a claim requesting a refund. When Paribus succeeds and a retailer issues a price adjustment, you are credited funds directly onto the original form of payment or provided the equivalent amount in store credit. It is sometimes necessary for you to call the company, or fill out a form to receive that credit in addition to Paribus reaching out. Paribus provides a convenient desktop version and an iOS app with a live feed of savings. Paribus compensates us when you sign up for Paribus using the links we provided.
I recently stumbled on the Trim app and I have to say, this one is a game changer. It’s a simple app that acts as your own personal financial manager. Once you link your bank to the app, Trim analyzes your spending, finds subscriptions you need to cancel, negotiates your Comcast bill, finds you better car insurance, and more. And of course, the app is free! My bet is that it will only take a few days for Trim to put an extra $100 in your pocket. So easy!