What could be a better option than to make money out of your hobby? If you’re a hobbyist who creates some sort of artwork such as sketches, doodles, paintings, etc., you can put these up on a portfolio website with your name as the domain name and sell them. You would need to frame the artwork, but do it only when you receive an order. You can easily build a portfolio website with Pixpa and sell your artwork right from there.
Residual income is calculated as net income less a charge for the cost of capital. The charge is known as the equity charge and is calculated as the value of equity capital multiplied by the cost of equity or the required rate of return on equity. Given the opportunity cost of equity, a company can have positive net income but negative residual income.