I think it possible that there is a well-intentioned but socially off person behind this.
I have known too many people who seem to genuinely find dolls like these appealing to be completely convinced that this is something intended to be sinister.
I think this ^ is spot on. Those are modern reproduction dolls. The first one might be a copy of an older head, the second one (in blue) I'm sure I've seen in modern doll magazines. The painting is looks competent (no hard-edged, lipstick red lips), the proportions on the second one are bad. (Hands should not reach down to the knees.) Probably made by a local hobbyist (I was taught to always label a doll I made - initals and date carved into the greenware, usually at the nape of the neck, where the hair or clothes will cover it. That way it can't be passed off as an original - hah!)Probably given with the best of intentions, as Alessandra says, by someone a bit clueless as to how creepy it would seem. Someone who is seeing this in the papers and is horrified by the reaction.
The 3 flat wooden dolls are another type of doll entirely, commercial stuff. Maybe it's doll club? When's International Doll Day?
We got my MIL one of these back in 1999 or so, so they're not anything new. All it takes is a series of photos of your "target."
The hair part is a little creepy.
http://www.mytwinn.com/
In various forms, the 'doll that looks like your child' has been around for ages, from printing a picture of the child's face on a stuffed doll, to choosing from a selection of heads, adding matching hair and eyes, to commissioning an artist to make a portrait head.
I don't believe that's the real girls' hair, or actual hair at all. Those look like cheap synthetic doll wigs.
There's an update: (nothing specific or spectacular - apparently it's harmless, though)
http://ktla.com/2014/07/24/porcelai...irls-placed-in-front-of-4-o-c-families-homes/