I live less than a mile from my local grocery store, yet people are *still* amazed that I’m able to go grocery shopping on my bike.
Granted, there are some limitations. Heavy stuff (soda, laundry detergent, beer) are nearly impossible to carry on a bike and frozen food is impractical in the summer, but most everything else is possible.
I managed to fit all of the stuff below into one small backpack and 3 bags on my handlebars. The only casualty of the trip was the lone banana that got separated from the bunch. Oh, and my legs. This probably added a good 25-30 lbs to my “load,” so I definitely got a workout that day.
If you live within a reasonable distance, consider walking/biking to the store next time you need to pick up a few (or more than a few) things.