More looking for stuff in the vein of how to sign up to be a guinea pig in an experiment or logging the animals I see in nature or something, but other answers are welcome too!

I don’t really use Reddit much anymore, unless I’m looking for specific things (like a preexisting answer to tech question, I want to do due diligence and seek an answer myself before asking for help online). But I do poke my head in r/samplesize from time to time to fill out both academic and “just for fun” surveys. I also used to sign up for psychological studies, both just questionnaires/surveys and things you actively come in lab for, while in college. I am no longer living on a college campus. Aside from keeping on keeping on with r/samplesize, hooking up with and driving to the nearest college campus for their studies, and trying to keep in touch with my old college for their surveys, what are my options here?