A.C.
There is a "drop-in" daycare in our area. You have to register your child in advance with shot records and stuff, but then no appointment needed, they're open from 7-10, I think. I have never used them, but I have friends who have, and say they are fun and responsible, and make going out so much easier. I don't know if it is a chain or not - it is called Skidaddles or something like that.
What I do is I have a baby-sitter who comes one day a week, every week, from 9-12. I use that time to schedule doctor's appointments (always WAY in advance, since I can only do that one morning), hair cuts, etc. On days I don't have appointments, I can run errands and such. It is such a relief, and I love it more than possibly using Skidaddles because my kids know the sitter and the sitter knows them, so I just feel it's more personal. Of course, my kids are quite little, which makes a difference.