Reduce, Reuse

So there’s this artist person who re-uses Jakartan trash as shoulder bags. What local trash would make good material? Plastic grocery bags are quite good as crochet material when cut into strips (I recommend 1-1.5 inch strips with a J hook- cut off the top handles and bottom of the bag, then cut as one long spiral). I made the very recursive bag of bags that way. Thrift shop clothing can become quilt squares (I’ve not yet gotten back to my pink and grey wool quilt). Old t-shirts can become slippers (I may someday post the instructions I reverse-engineered).

Any other suggestions?