Teach courses. Udemy, Skillshare, etc. If you're in a big city, see if the co-working spaces also offer classes, then you can go teach there.
You may not realize it, but relative to ten years ago, you know a lot more, so put that knowledge in an ebook or course and sell it to people ten years younger than you.
You may not realize it, but relative to ten years ago, you know a lot more, so put that knowledge in an ebook or course and sell it to people ten years younger than you.
Build mobile or web apps.