Here's my secret: they sleep.
And school time.
Last year I told myself she was doing "half-day" kindergarten. Well that schedule has been working out so far for us this year, too.
Did I mention my kids are great sleepers? They are amazing sleepers. They don't take piddly little naps. Oh, no. It's 2.5 to 3 hours just about every day. You can get a lot done in 2.5 to 3 hours.
I actually have a whole box of activities for my 3-year old to do while we're doing school, but she never gets to use them because she sleeps through it all. It makes her sad, but I'm okay with that. She'll stop napping soon enough.
But for now, I heart nap time.