When you retire from your regular job then you might want to do something different.
Maybe you are the type of person who needs something to keep him busy. Maybe you need to work to supplement your income . There are several ways that you could do. You can help people learn what you know. You can become a consultant . Someone could sell things for other people. You could become like a taxi and get paid to deliver people in your car. You could run back and forth with things people need. Another idea is to rent space in you house or building.
How about working on the internet.Starting a business with a server, get followers , a website, and selling products .You can work at home and know a little about the computer. There are several legitimate business but look out for scams.
Some of the more common ways would be Real Estate Investing. Maybe get a Real Estate License. and buy properties. You can the rent them out and get passive income coming in. Have a good knowledge of selling and repairs on the houses to keep cost down. Get a good knowledge of renters habits so that you want get taken to the cleaners.
You can buy stocks,bonds, and mutual funds to get passive income form gains and dividends. Have a knowledge of trading ,researching the stocks, and fees.You can keep the winners and get rid of the bad ones. You got to know what you are doing.
You can do proof reading ,be a caretaker of pets and people. You can sell crafts that you make . You can sell products that you bake and sell them.
Do a business that you like if you did not like your previous job. You got to have passion to get up in your old age to being doing something. If you are going to be self employed know about accounting,management, marketing, and hiring people.