I agree the glass one was good as far as how many different directions it could go. I particularly enjoyed writing to it, and will probably make my response into a full short story eventually. I also enjoyed writing to the "Box." I was afraid I would just end up saying something about the homeless and was pleasantly surprised when it came out completely different.

I still am waiting for the dreaded BLOCK to hit me. That usually doesn't come until Day 10 though. Hehe