hmm I am not sure if my answer is the one you are looking for BUT I will give it to you anyways and hopefully it helps;

I was given play therapy once, because I find it so hard to open up to people, so i guess they wanted to try the play therapy as a way to see if they could get my inner child to reveal any of my hidden thoughts, they knew they were their, but i just wouldnt let them out, I was taken to a therapist who specialised in it I guess, first thing I noticed about the room was that it was bright, with a little sand pit thing in the centre and shelfs filled with toys (which im not ashamed to say...i ran straight for, because I wanted to play with the mr burns toy from the simpsons ) I guess play therapy was more aimed for kids really, but oh well, basically she would let me paint, draw and just mess around like a kid and would try to interrpret my actions to be what might be happening in my mind, it was fun, it didnt help me, because i knew what she was doing and I wasnt ready to be 'fixed' at the time, But I can see how it helps, didnt have to say the words, she would just try to interrpret me.