Each of us has hobbies: whether it's reading books, watching serials, listening to music or something else. If you are, for example, a movies fan, most likely, you have a list of the most loved, which you can review endlessly. Whatever it is, just share with followers your collection of something interesting and useful. Such a post will be unlikely unnoticed. And if you write that you expect similar recommendations from followers you'll get the active interactions with the post.