Next, fold the bag in half lengthwise, twice, and cut off the handles, and the bottom seem.
Then, cut the bag into about one inch strips (they don't have to be perfectly even, just somewhat similar).When unfolded, the strips are actually loops, which can be intertwined...
...and knotted together.
Finally, roll the plastic strips into a ball, and crochet or knit them into anything you like.
We used a round knitting loom (the adult hat size), to make this purse. Loom knitting is simple enough for younger children, and there are a lot of patterns free online. We just kind of bumbled our way through this one, improvising from the hat pattern that came with the loom. The children did help, although I ended up doing most of the knitting. Even so, it provided a good lesson in recycling, and crafting at the same time. And now, I have a lot more room under my sink.
It's great to be a homeschooler!