"Paper, please, and fill 'em full"
That's my standard request of the grocery bagger, and sometimes it helps a little bit. I'll end up with five paper bags instead of 10 plastics (although one will inevitably be double-bagged), and three items per bag instead of two. But tonight the bagger took me seriously! He filled those bags to overflowing. An older man, he looked at me doubtfully, and said, "Are you sure you want these this way? They're really heavy!" I assured him I'd be fine and happily took my TWO, count 'em 1, 2, FULL paper bags home. One immediately went out with trash in it and the other is currently waiting under the counter for whatever scraps and wrappings result from tonight's dinner. Perfect :-)