So long, plastic bags. With less than a metre of fabric and a little bit of time, you can make your own reusable containers for snacks and sandwiches.
You'll need cotton fabric and nylon for the lining the inside (it helps keep moisture from leaking out), plus polyester thread, velcro and basic sewing skills. Cotton napkins, already cut into squares, might be perfect for this.
This project will save you the $US10 or so companies charge for similar sacks, plus you can customise ones for your whole family. Hit up the instructions on BHG below to get started.
How to Make Reusable Snack Bags & Sandwich Wraps [Better Homes and Gardens]