I do kind of "low-medium" content, I've seen a few sales from lined journals, but that space seems really saturated lately so I'm experimenting with other options. My best advice is to go to your local big box chain book store (chapters, indigo, barnes & noble, whatever), and look for books that aren't your typical novel. Find what you're drawn to and go from there. Cookbooks, craft books, day planners, etc all don't require you to write a novel's worth of content, but they're more unique than the sea of lined notebooks with pretty covers that are all over Amazon these days.