Ask HN: Looking for parent-friendly tech conferences

It seems like several of the larger conferences, such as PyCon, have begun offering child-care during the conference sessions so that parents who might not otherwise be able to attend can bring the kids along. I'm curious if you know of any other parent-friendly conferences of interest to HN readers. If you know of one, could you post the conference name and its website, and (if you happen to know) the cost of childcare and the quality of the program?