We all forget our reusable shopping totes from time to time. Instead of putting yourself on a green guilt trip, pick paper over plastic (ask your friends and relatives to also!), and upcycle those bags into some not-so-shiny seed packet business cards.
grocery bags

Printer-Friendly Grocery Shopping: Brown Paper Seed Packet Business Cards Tutorial
Ma'am, Will That Be Paper or Plastic?
Are you still making a paper or plastic choice? How about neither...choose cloth.
New Biodegradable Plastic Bags
New company offering biodegradable plastic bags to businesses, organic shops, supermarkets, department stores, and other types of stores at reasonable prices. Looks interesting. The site has a lot of info on it.
World Food Program "FEED" Bag is Cooler Than "I'm Not A Plastic Bag"
The World Food Program's "FEED" bag is to be used in place of plastic bags. It's great for the environment, feeds a child for an entire year, looks very cool and isn't expensive. I'd love to see everyone walking around with one of these! Saving the planet isn't hard, sometimes it's as simple as ordering a $59 bag!