https://www.chillsubs.com/

Have I used them? No (Let me know what you think if you try them.)

This looks like an excellent place to find potential outlets for your writing. From the ‘About’ on their website: “We give you some very nice search tools and cool details about each opportunity which makes it really easy to actually take action. We're also here to promote the hell out of your work and help you connect with people. You can create a profile, add your publications and services, AND browse other profiles and their publications and services. How cool is that!?”