I recently took my DD for an evaluation by a play therapist who runs social skills groups. Unfortunately she doesn't have a social skills group slot open for DD yet but I thought that the activities she did during the evaluation were good. She offered to do 1:1 therapy but DD is already getting 20 hrs/week of ABA so what I want is more facilitated interaction with peers rather than another adult therapist. But I do think that play therapy could be very helpful to kids with ASD.