Weaving Sleeping Mats for Homeless
We have adapted to weaving because it is much easier for our middle schoolers to accomplish than crocheting mats together. We made one mat in about 2.5 weeks. I'll attempt to give you the specifics in case you want to do this with your schools.
How to make PLARN (Plastic Yarn)
Graphic shows how to cut bags and video shows both cutting and attaching together.