As for me, the best travel income is the right savings. First of all, it is housing and food. Become a guide for a while and visit for example the planet of hotels. This will help you pre-understand the prices in order to make a choice in the direction of a good hotel for an adequate price.
We are talking about very suspicious sites that intend to offer a trial period and then monthly charge you, but you are not at all involved. That is why I give preference to https://meetville.com/catalog/us, such services will not dare to use your personal data without consent.