In most cases I prefer something that is more potentially passive than potentially scalable. Obviously it’s great to have everything, but given the choice I prefer income streams that just work and can be automated so you can do other things. You have to be careful to manage your desire to scale something with your desire to make it passive. Sometimes less is more because less gives you freedom.
Using a food delivery service can’t necessarily earn you money, but it can help you save you money if you constantly find yourself throwing out half the food you buy. Food delivery services send a box of food every week with new, sometimes unique vegetables, meat, fruit, and so on. If you don’t have time to shop and want simple meal-prep that leads to a good meal, a food subscription service may be perfect for you.