I have done a bit of research on your company but there's not much available online. As a e-commerce company that has to change!
I would be following these steps:
Market Research: This will involve more detailed information about your company and the marketing opportunities that may arise. I won't simply just tell you products to sell with any evidence to support it.
Branding: This will create an audience for your products. If Priish has a recognizable and quality based brand, products will start selling themselves. Branding is meant to inspire trust between Priish and it's consumers. Buying something online relies heavily on the buyer trusting the seller.
Fixing a Problem: The best way to gain sales is if your products are the solution to a problem. If it is a problem that is focused on a small segment that is untapped; it might be very profitable. Therefore, the products you sell has to be those the solve a problem, consumers are passionate about them or just products that have an opportunity gap.
Trends: Lastly, I would recommend ways on how to capitalize on trends early. For example, the fidget spinners earliest sellers made the most profits as they established themselves as market leaders before the market was saturated.
Logistics: This is an integral part of choosing the products to sell. How easily can these products get to your consumers and how do you get them yourself? These are questions that has to be answered.
Lastly, the picture you attached of the lighter attached to the canister might be a great product if it is marketed properly. There is some potential there. So, let's get to work on this!!!!!