There are several business for a retiree but it will be based on the person in question, the person will have to possess knowledge required to excel in any one he or she ventures into. But it should be a business that is not too demanding because most retirees are aged people, they might normt be able to cope with a physically demanding business. I will recommend a transport business, though getting a trustworthy person might not be easy but If they happen to get one then it Wil be great.
They can actually own or rent a shop close to their home,and sell things what people in there area needs most,for example like pour water,bread,sweet for the little one in the area to purchase from them,and they could also be selling a recharge card as well..
All they were do is to just sit in one corner or front of their shop and showcase their business for people to see,would they could come and patronize them...
I know that all this that I mentioned doesn't take more stress,once they can venture into that,they start making money till their creator call them back to his side...
I hope all I pointed out here will be treated on for our old retiree to do!!!