One of the big successes of the last few years is subscription box services. For a fixed price each month, the customer receives a box of supplies or goodies in line with their needs or interests. It could be something utilitarian like razor blades or tampons, or something more indulgent like chocolate or whisky. The benefit to the customer is that they get something they want or need each month without the effort of shopping for it, and the benefit to the company is that they get a continual and regular flow of income.
To get in on this, you’ll need to find a consumable product which either isn’t currently available via this route, or is served badly by existing suppliers. So what could you sell on a box subscription basis? Is there something in your market niche or area of interest?