Baby bibs, aprons and now reusable grocery bags are helping reduce my fabric hoard. These are very simple, lined bags with no pockets. I keep one in my purse and another in my backpack so they're always at hand. My last plastic bag was the pattern template. After making two bags with pleats at the bottom like the plastic ones, I decided boxing the bottom would sew through fewer layers. The box is easier but pleated bags fold up more neatly. Here's a tutorial for boxing a bag by Drago[knit]fly.
These are great gifts in California where everyone must bring their own shopping bags to the stores. Instead of piles of unused yardage I have many new scraps.