So i found out about an exploit including the Drecko. When you wrangle a sheared Drecko its scales will grow back and everything else will be reset even if its tamed. That means that you can exploit it to get a lot of reed fibers and plastic (i haven't tested Glossy Dreckos but i expect them to have the same outcome). EDIT: I tested on Glossy Dreckos and it also works as expected, which means you can also get infinite amount of plastic. I think you can do that on all critters its just that on the Dreckos their scales grow back so they can easily be exploited.