Wow, That looks really great !! Thinking i might have to try and do something like that. Would you mind explaining to me how you did that?. I see you said you used grout and styrofoam. But i was curious how much styrofoam to grout ratio did you have to use. and how much of either did it take to make something like that?. Hope you don't mind me asking. I just find what you did really sweet and would like to have something like that for my BD.
When I have a bit, I can make a post with all the progress pics and exactly what I did! I basically just designed it with styrofoam, and then applied layers and layers of grout until it was rock hard.