A possible reuse of PET water bottles is the transformation into yarn.
Thanks to a very simple tool to manufacture at low cost, it is possible to turn a PET bottle into a plastic yarn that can be used for all kinds of things, especially for making very strong connections. Chairs, crutches, trolleys, tables, tools ... This plastic yarn is a very useful resource and currently almost inexhaustible.
See youtube video here: https://www.youtube.com/watch?v=hQeeJEpBYsg
Go to instruction page: Instructions