I am at the same point. I intend to work till late spring or early summer and call it a day. Also 90 percent there in my head.
Won't file for Social Security until next year. I'll be way over in income so I would have to give it back any way. So might as well get closer to 66 and 7 months.
I will continue my part time cyber security gig at the school which will keep me from going insane. I won't file for the State retirement until I stop doing that as the monthly payment goes up 200 bucks a month for every year I wait.
So for side gigs, you can get a retail job in a heartbeat. Any big box, department store or grocery store will hire you instantly. But you should look at options in your current field. Reach out to customers, suppliers and so on.
Part time parts sales at a motorcycle dealership?
Male hooker pays well, but is a pain in the ass, literally.