Being Green at the Grocery Store

When we do grocery shopping, about the time we are at the checkout with the clerk asking, “Paper or plastic,” is when I remember the reusable grocery bags we purchased sitting in the trunk.  So how do you remember to take them in and actually use them and stop using bags that require trees being cut down or plastic bags that sit in our landfills for tens of thousands of years?  Every time I do remember them, I feel good about saving the environment plus they are nice, sturdy bags.  Sometimes I tell my wife to go through the line while I run out to the car in the parking lot and get the bags.  I guess it’s just a matter of putting them on the seat next to you when you head to the grocery store or attach your grocery list to them so you have to take them in when you enter the store.  Anybody else have any ideas?