A "niche hobby" refers to a pastime or interest that is not widely known or participated in. It is unique and often enjoyed by a small group of people who share a specific, specialized interest. Full definition
While nearly everyone likes to curl up on the couch and watch Netflix, not all of your suitors will be interested in niche hobbies such as marathon running and playing Pokemon Go. (profilehelper.com)
If any particular aficionados of any particular niche hobbies are worried that their favorite pastime may never receive Hollywood's famed inspirational underdog treatment, they should probably get in touch with Sean McNamara, a director / producer / writer with Disney Channel ties. (kinja.com)
They've started online retail sites, produced blogs to share thoughts on a book, food they've eaten, video games they love to play, and built virtual communities to support niche hobbies (support which might not exist in a small hometown). (edutopia.org)