Anything. Physical production workers are only a small part.
A computer game would be perfect to distribute and scale. But it's hit or miss, which means that much work could end up with nothing.
I am not sure if its best to determine a business first and then look for people or if it is better to look for people and then determine a business.
To make a suggestion, a delivery service could be an option in a city without an established player. The restaurants have to be called, a website is needed, workers have to be recruited, advertisement has to be created, complains have to be settled. But it could be too big to start from nothing.
To start small, selling international sweets could be possible. It requires a small inventory and having people from all over the world helps with selecting the products.