Startup cost: $0 - $100

Tellwut is a survey platform where users can earn rewards by participating in surveys. Starting this side hustle requires no upfront cost as you can sign up for free and start earning immediately. However, for someone looking to maximize their earnings, they might invest up to $100 in tools or services to streamline their process. This could include a faster internet connection, a comfortable workspace setup, or premium survey tools to access higher-paying opportunities. There are no hidden fees, but the time investment can be significant. Online communities generally consider this a low-cost side hustle, but the earnings potential is limited unless you commit significant time.