Do you enjoy fast food or going into retail shops? Many companies hire mystery shoppers to test the customer service of their stores. A common one is Subway, which hires mystery shoppers to ensure that "Sandwich Artists" are following all the franchise guidelines. If you have time and can travel to different places, this could be a good side hustle.
A work from home job can be any position that does not require you to be in an office. There a wide range of work from home jobs. Some companies offer opportunities for employees in traditional roles to work remotely for all or some of their workweek. These jobs often use technology for meetings, assignments, and collaboration. This practice is called telecommuting. Other work from home opportunities may include jobs such as customer service representatives for which companies will hire remote workers, or part-time virtual assistants to manage work which does not require a physical presence in the office.