It doesn't have to be flashy but it has to make money and can scale. The focus should be how can I make money, then build the product around that. Being able

It doesn't have to be flashy but it has to make money and can scale. The focus should be how can I make money, then build the product around that. Being able to build the full product in a day allows you to pivot. A side project doesn't have to be a business and probably shouldn't to start with. Why not build a game or app get as many people playing. Once it reaches a level you can try to make it a business afterwords.