Many work-at-home companies hire you as an independent contractor as opposed to an employee. That means you are responsible for submitting your own tax payments. Taxes won't be taken out of your check like you are probably used to. It's so important that you keep good records of your income – and expenses. I highly recommend Quickbooks Self-Employed.
With apps being constantly developed, competent app developers are in high demand. Again, if you have the experience or skills to create successful apps then this could be something you could end up working on as a full-time freelancer. Check out adverts for developers on Toptal, a higher paying jobs site for experienced freelancers wanting to make money online.
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.