Try Uber EATS or DoorDash. Uber EATS offers part-time work that’s similar to driving for Uber or Lyft. Instead of picking up passengers, however, you will pick up food orders and deliver them in your area. Pay works similarly, letting you earn a per-job rate plus tips. Door Dash works similarly, letting consumers order food from restaurants and connecting drivers to pick up and drop off their meals.
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).
As you likely know, Airbnb is a popular website where people can rent out a room or apartment from ordinary folks and bypass a hotel. So, if you’re comfortable with strangers and you live in fairly well visited place — a large city, college town, or tourist area, for example — you could make some money renting out a room in your home while you’re there, or renting out the entire place while you’re gone. You can expect to make less than whatever nearby hotels charge, but that can still top $100 a night pretty easily. In fact, Airbnb is the most lucrative of all the sharing economy gigs, according to one study.
As an Instacart personal grocery shopper, you will actually be doing the grocery shopping yourself (so don’t crush anyone’s avocados!). Your compensation depends on several factors, like the average size of your orders and average number of miles driven per trip. You can also get tips in addition to the pay that comes directly from Instacart (most people report an average earnings rate of $15 per hour).