I've seen people use gallon milk jugs for ice before and just came up with the same idea but a smaller version. As I was cleaning a few empties from the backseat of the truck it came to me, duh....use them for ice. They are the same size as the stuff I want to keep cold and are easier to pack around than a gallon jug. I did think of something to keep them noticeably different, add blue food coloring. I'll need to remind DS that they are NOT Propel fitness water or Gatoraide.
Just a little hint for those who don't want to spend more money for ice, (I'm saving my extra money for GAS).
