Use what you have for quick make bags…
I have a roll of book covering plastic doing nothing in my stash, so cut rectangles from it and headed to the sewing machine
I folded copy paper (yes I also have a lot of coloured copy paper to use up) over the short ends and stitched it in place with a long zig zag.
The covered ends were folded together and the open sides zig zagged together to make a bag. I even boxed the bottom of the bigger one shown but am not sure it was worth the effort.
Two tips: use an old blunt needle as the plastic will ruin a new needle and long stitch lengths will minimise problems with the plastic slipping.