I
the plastic grocery bags. I reuse them daily, primarily to collect the lumps from the kitty litter pans. One day soon, Washington is going to ban them, so I've started a stockpile. They're taking up a lot of room in my pantry, but I'm not giving them up until they pry them from my cold, dead hands.
I
don't do the plastic water bottle thing. I call that an even trade-off.