I don’t know about you, but I find that plastic bags seem to multiply like rabbits; until they are no longer made, I say that we need to take lemons and make lemonade. I use bags to crochet “plarn” items, and reuse some as waste bin liners. This image below is from Pinterest; the source was not attached, so if you know who took the original image, I’d like to credit them for the image below.
I’ve been using this technique for years, and it’s simple, neat, and convenient. I store my bags in an old whiskey carton; I can then grab a few and toss into the bottom of our smaller bins occasionally. For larger plastic bags, I have a storage bag; the size of the triangle tells me roughly which size bag I’ll get, so I can quickly find the right size (or colour, if for crafts) of the bag I grab.
The last step is not very clear; it’s simply that you tuck the last fold into the other folds, to keep it from unravelling. If you find that a bag’s “leftover fold” is too short to hold, back up one fold, fold the top in the opposite direction to form a triangle, and then tuck it in.
Below are a few of the bags I’ve made; the white plastic yarn, or “plarn” is made from the flimsy veggie bags you get at grocery stores. Cut into one continuous strip; once they’re crocheted, they’re sturdy, and you can toss the bag into the laundry when needed! The black bag is made from the thickness of bags you get at a clothes shop. I use that bag to tote reuseable grocery bags in, and I’ve added pockets by ironing (between baking papers) cut-outs of drink plastic wraps (below), and ironing them onto the sides of the bag (be sure to slip baking paper under areas of the label that you don’t want melted to the plarn bag, to create the pocket!). If you’re interested in doing something like that, there are tons of tutorials on YouTube and Pinterest!!