I always felt I had to do everything anyways for my own kids so it was easier to have the kids come as usual, gave my own kids someone to play with and we just took an internal sick day meaning they watched a lot of tv/videos, we did grilled cheese for lunch - with soup too for me and I did nothing but sit as much as I could.

Parents appreciated the not taking the day off, didn't have an issue with no circletime/crafts and skeptical meals/snacks and often rewarded with early pickups or treats either for me that evening or for the next day to serve the kids - ie a big box of timbits at pickup time.