You can find a lot of online business ideas from Pennyhoarder alone 🙂 And to top on their suggestions, I have my own! It's not a business, more like passive income. (But you can treat it as such)
If you have items you don't use anymore, consider renting them out to those who may need them. The idea is to list all your available items on an online rental site that will show your stuff to the neighborhood. This way, people don't have to drive all the way to Home Depot but just walk their way to you.
I personally have rented out canopies to people who live near me. Earnings are good especially during summer! I use My garage Rentals for this!