B..
I would not have my child there. My parents had a garage sale a few months ago, and I helped. There were times where people were asking me and my mom a question at the same time. There were also times when there was a lot of people there, and a lot of cars coming and going. There were moments, when it would have been very hard to keep an eye on my child. He is 3. I think an older child would have been fine, but not a toddler. It makes me nervous, because toddlers don't have the reasoning skills. They are more impulsive. I just don't think that mixes well, with garage sale atmosphere.
Heavily used stuff needs to be pretty cheap. People will ask for the price they want, anyway. I would just say "children's items."