Recycling your plastic grocery bags into yarn is very easy. The resulting "yarn", better known as plarn, is great for knitting or crocheting reusable shopping bags or other useful items.
First, save up lots of bags. You will probably need at least 40 bags to start with. Please do not get extra bags at the store for this project...just use the ones you would normally get.
Flatten the bag out
and cut off the bottom. Then cut off the handles
This is what you end up with
Next, fold it up
so you can cut "rings" (about 1-1 1/2 " wide)
I think the following photos are self explanatory
Once you get the bag all cut up you now want to link them all together
Pull gently from both ends to secure the slip knot
Keep doing this over and over and roll up into a ball. Now you're ready to knit or crochet into whatever you want. The slip knots are hardly visible in the resulting fabric. Because you are linking the loops the plastic yarn is double ply which makes for a sturdy yarn.
Knitted plastic bag performance review:
Yesterday I tried out my first knitted plastic bag and I was very happy and satisfied with the results. I used it to carry 17 + pounds of fruits and vegetables and the bag is no worse for wear. If anything the bag was too big. It does stretch, but remains sturdy. I could have easily add more items to the bag, but as it was, it was almost too heavy to carry. My next bag will be much smaller.
I'm excited to make my next one...I really think that knitting plastic reusable bags is a very good thing :)