Edit: Original Video no longer available - Source files remain at your disposal.
I took the last tutorial and cloth simulations a step further. Today I am going over how I made trash bags mostly procedural and with quite a simple setup. Make sure to check out the source files, available for free right here on ArtStation: https://artstn.co/m/dnGb
Oh and by the way: you don't need Blender for this. Any software with similar features will do.