Looks interesting You should post it on the new forum too, so it won't be lost (since they won't migrate this thread since it is posted after 12 March)
@elanorbreton, it was a regular birthday party. Before the party I had the mother travel to a couple of households who had a toddler or infant. She befriended one of the parents and asked to be introduced to the toddlers and infants. That way she could invite them for the party.