Joe Kurz has an ornate Temple Bath freebie with a custom-modeled water plane in it. I just saw a prop (I think it was for sale, not free) that used a number of water props that could be stacked, for a very realistic 'submerged' look for any models that were immersed in the water. But I'm sorry to say that my poor menopausal brain will not disgorge where I saw it.....sorry! Maybe LD will know where it is or what it's called :)