Almost Everything is a Renewable Resource
The only limitation is your imagination
Got an old bookcase? Don’t send it to the dump; make yourself an Instant Raised Bed!
What kinds of bottles? What specifically is the process? What is the machine?
Let’s say I can make some wire for 3D printing out of that… what in a real practical sense can I really even make that I need from that material anyway which won’t itself be, basically, another plastic bauble?