I use reusable bags almost every day for groceries, and netting bags for produce at the supermarket. Here are a few that may get your creative juices running to make your own, or give as a gift.  My favourite is the third bag along with reinforced handles.  From left to right:

Morning Glory Lunch Bag – Made By Molly – $20

Oilcloth Lunch Bag – Julie Meyer – $18

Reusable Shopping Bag - Pretty Green Bag – $20

Produce Bags – Amk Designs – set of 6 $12