I'd buy the biggest, loudest toy possible.
Make sure there is no on/off switch, and that you need a screwdriver to get the batteries out.
Also it should squirt water.
+1 for lots of silly string and playdough.
Yeah, I would definitely un-friend this person, on FB and IRL. I'd also consider cutting out whatever mutual friends we have, or at least decreasing contact with our shared friends. That may sound harsh, but I don't want my child growing up thinking this sort of greedy behavior is acceptable, and she will if I choose friends who behave this way.
But also I am 36+ weeks pregnant, exhausted, and generally grouchy. Maybe in six months I won't feel as strongly as I do now.