If you are anything like me, then you have a container somewhere in your house dedicated to the sole purpose of holding plastic bags. Making plastic bag yarn, or 'plarn', is a great way to repurpose these bags that would otherwise take over 1000 years to decompose in a landfill.
Once you have these few materials, it's time to get started
(Need help? Ask in the forum.)
See Plarn Creations and Patterns
More Ways to Reuse Plastic Bags