I started using cotton/canvas bags when the whole foods grocery I shopped at started charging for paper bags. That was more than 25 years ago, and I am still using some of my original bags! I launder when soiled, resew and repair when needed. I keep a set we use just for food shopping at home, and other bags for general shopping in each car. An easy way to remember to use them is to set your purse on top of them in the car. You'll more easily remember to take both into the store when you shop. Soon it'll be such a habit you won't need reminders. I also have sewn cloth drawstring bags with a clear pocket to wrap holiday gifts in (yes, the recipients know I want the "gift wrap" back - but they all like them so much I've had to sew batches for friends and family members.) And I keep one cloth tote bag for each of the organizations or important persons in my life, and use them to accumulate materials I need for the meetings or things I want to pass along (like a book to my sister).