This document lists 80 side hustle business ideas that can be started today. Some of the ideas mentioned include renting out space on Airbnb, being a Task Rabbit to complete tasks, selling goods or services on platforms like Etsy, Fiverr, Amazon, completing surveys, tutoring, dog walking, and more. The document encourages joining an online community at SideHustleNation.com to learn more about starting a part-time business.