According to Getaround’s estimates, car owners that routinely lend out their car can earn “$1,000s per year actively sharing your parked car”. Considering there is no effort needed by you, it’s a pretty good way to make money. That being said, your car will likely depreciate a bit faster by virtue of lending it out to other people. If you have a big car loan or are underwater on your loan, putting your car on a site like Getaround might not be a great idea.
Cafe Press: This website allows you to create digital designs that can then be sold on the platform. You'll earn a commission for everything that sells and you'll never have to deal with logistics like printing, warehousing and customer service. If you have some graphic design skills, then this is a great potential source for your web-based income.