No matter what the product or service is that you sell, when posting content on your Instagram account and other social media outlets, businesses should allow their imagination to run rampant. Imagine creating something that your customer could see themselves using. Whether it is a sharpie or any other product, show the customer how that product is going to better their lives, or how it is going to allow them to become a happier person if they own it.
If you can't think of something creative and unique about your own product, how can you expect your customers to do so? You are the creator of the product, therefore you have to show customers some of the countless ways it is that your product is going to improve their life, is going to give them something they do not have and is going to give them something that they are not going to be able to get from any other company or product that is available on the market.