I did sand play therapy with my t when I still saw her in person. It was always revealing for me - not always immediately, but sometimes it was later when I was writing up my notes about our session or sometimes it would come out in a dream. In fact the sand play was so beneficial to me in t's office that after she moved and we went to phone sessions, I made my own sand tray at home and am slowly adding miniatures to use in it. It's so worth trying - I find it very relaxing at a minimum sometimes a sand tray I've done will spark a deep period of work with t.