What works: Images, projects.
What doesn’t work: Mostly everything else.
Instagram is a strange beast. The entire point of this medium is to compel readers to follow you and talk about what you offer. This works best for verticals like restaurants because your customers can post images of your food for their friends to see. This also works great for verticals like home improvement. In this vertical, your business can post project and progress images of what you’ve been working on. Seeing these images and sharing them can work well to compel the reader to seek you out.
Instagram posts can’t include links, so just like Pinterest, the aim here is brand recognition. Can you consistently post interesting enough images for your readers to stay interested? Not every business can.