During the Indiana winter months I get the lawn tractor out every couple of weeks and start it and drive it around the yard, the same routine with the snow blower, Memorial Day, July 4th and Labor Day I have the snow blower going and running it up and down the drive.
Not the exact same thing, but I fire up the furnace every couple of weeks in the summer and get the house up to 80, then in the winter I set the AC on and get the house down to 60 at least once a month.
I have an alarm clock that I don’t use since I retired, but once a month I set it to some random time in the early am hours just to make sure it will still wake me if needed.