It is a great idea, but Halo would look at it, look at me, and think "Yeah that's not happening!" Wouldn't cookies get soggy?
On that same thought though, in the summer I use ice cream pails and freeze half of it overnight (water) and then in the morning fill the rest with water so that the dog has cool water all day. If you have two pails just rotate them. One in one out.
Come on Marko, you only froze your tongue once?? I even had my ski pole stuck to my lips once in Quebec!