There are many markets for the personal essay (http://thesunmagazine.org/about/submission_guidelines/readers_write), for no one can tell the story you have lived & from your unique perspective. They are the easiest to write because they require little research. https://sarahleastories.com/2016/10/01/waves-in-a-timeline-personal-essay/
Greeting cards are a fun way for poets to make real money. The Blue Mountain Arts greeting card company is one of them. http://www.sps.com/poetry/index.html. Note: Having a worksheet of all the different greetings helps me generate more content. http://www.studiomiragegreetings.com/greeting-card-occasions-list/
If you need help getting started, try submitting to a publication with a prompt. http://www.thefirstline.com
You don’t have to agree with a publication’s vision to submit to them. You just need to be interested in the topic or theme. http://www.writersofthefuture.com/enter-writer-contest/
If you find yourself channeling your inner Dave Barry or Erma Bombeck, submit to “The Lighter Side” section of The Saturday Evening Post. http://www.saturdayeveningpost.com/about/submission-guidelines#humor
Writer’s Digest offers several free ways to get published in their magazine. The 5-Minute Memoirs is one of them. https://sarahleastories.com/2014/07/10/5-minute-memoir-to-writers-digest-former-submission/
“Chicken Soup for the Soul” is all about writing what one knows, with calls for submissions that relate to most people. That said, don’t get discouraged: You will receive no notification upon reception, only upon acceptance. http://www.chickensoup.com/story-submissions/possible-book-topics