Plarn, or plastic yarn, is a wonderful alternative to traditional yarn. It is simple to make, all you need to do is cut plastic bags into strips and connect them together. There are some wonderful tutorials on YouTube.
One of many plarn making tutorials.
You can use plarn for most knitting patterns. The main challenge is that the material does not stretch the same as yarn (or even T-shirt yarn). If you stretch the plarn while creating your project, it will probably rip. Here are some wonderful plarn project ideas.
Plarn water bottle carrier
Plarn shopping bag
Like always, if you have questions be sure to contact WOW. We would love to chat more about this and other projects.