Ok I'm taking notes. I want to make sure I understand. Your formula for lots of creative fun with minimal fighting is as follows: grocery bags (insert kids... individually bagged I assume)+ rocks (in the grocery bag to keep the kids from being able to move) + paint brushes (is this to mark who's in which bag?) + good weather (is that the part the adults enjoy or is that just so the bags can safely stay outside without extreme heat or rain harming their contents?) + little kids (already taken care of). :)