Have you ever had your LO's preschool/daycare teachers babysit your LO(s)? Did they offer to babysit for you or did you ask them?

We had conferences the other night and LO's preschool teacher offered to babysit for us whenever we need someone. I thought that was pretty nice of her, since we don't have a babysitter besides our parents right now. We may take her up on that at some point!