My parents both retired in their mid 50s. My mom is a retired school teacher and my dad is a retired factory worker.
Shortly after my mom retired, she was offered a part time position with the school system to help at risk children. At the rate they were going to pay her. She could only work 10 hours a week without it cutting into her pension. She negotiated a pay cut so she could work more hours and still be useful. So she definitely didn’t need the money. [1]
They took the money she earned and went on three month cross country road trip.
After the funding was up for that, she tried to retire again and then another opportunity came up. By now they are both over 62 and getting both of their social security checks, her pension, and my dad is getting money from his annuity that he bought with part of his retirement savings.
She still was kind of bored so she made the same deal again. They took another three month road trip and used some of the money to both fix up their house and increase the size of it by 50%.
[1] most of the time you can work without affecting your pension unless it’s for the school system.