After my official retirement and 36 years with the same company, I then got new jobs, worked a while and retired 15 times, but when I tired of working for other people I decided to create my own business and got into the skin-care business. I produce and market eight unique products that actually help alleviate skin problems. The whole business keeps me very busy as I am still a one-man company. I sell through distributors, and online and directly to buyers. Best of all, I am not bored and my wife is happy too. I just turned 90 and expect to continue working until I make the last sale.
With my misspent youth I'll be lucky to hit 70;)