Options that come to mind for me (I've never tried to be a writer, so the list will be short and perhaps wrong, but hopefully it will help you generate ideas):
- Blog, and then monetize that blog (long-term)
- E-lance, and other freelance websites (immediate but irregular)
- Write articles on the template websites (not a clue)
- Write for online magazines and websites (immediate but irregular, and possibly harder to get)
- Become a freelance copy writer (immediate but irregular, and possibly harder to get)
Just thoughts. My advice would be to not look for the
best way to get money, but instead try as many as possible, and use the ones you like/work.