I would use this activity to help students get an idea of where they actually are in regards to the bigger idea that they live in a house, on a street, in a city, in a state, in a country and so on. This is helpful for students to actually get it so that it makes sense on their level. You could also do this on a smaller scale first of the school so they get an idea before the large scale project that this is.
I cut a sponge to fit the container, and just poured glue in. Students can just tap their shapes on the top of the sponge for a thin, even coat of glue - no more puddles! I worried about the sponges getting icky, but I still have the ones that I made well over a year ago, and the sponges are still intact AND the glue isn't stinky :)