You guys that camp, or take long fishing trips, etc...........a question.

Where do I find waterproof containers that will fit in ice chests? I want to store leftover hamburger, cheese, meats, veggies, anything that should be in an ice chest but doesn't need to get wet..........

You'd think I could google up a million of 'em.........but all I find are small containers for cell phones, etc.....(also available at Academy Sports). Lots say "airtight" and I have one of those but if the ice melts and there's lots of water, these DO leak........

Ideas????