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Here's a trend going on that you may want to take part in - renting out what you own. Various apps allow you to make some side money renting out things like that camper you rarely use. For that there's Outdoorsy. Got an extra car? Rent it out with Turo. How about a bike? Oh sure, Spinlister takes 17.5%, but they also handle all the financial transactions and verify both the lister and renter via cellphone and credit card.