This is a great way to earn extra income. I used to look for clients through ads, but recently I learned about a new platform - Carentify https://carentify.com . This is a service where you can rent out different types of vehicles - from cars to RVs and even boats. They already have over 50 types of vehicles in their catalog, so you'll definitely find a suitable category. You don't even need to look for renters yourself, the platform does it for you. So I recommend giving it a try!