I wonder what mundane items from today will be found far in the future and speculated about what they could be for. And if our plastic world will leave more or fewer of these artifacts.
Well, we've got a lot more pictures of things nowadays, so it's much easier to recognise, say, a shoulder-adapter for a bakelite phone horn, because there are pictures of people using one.
It's questionable how long it will last. On one hand, we can estimate the natural decay of them, but on the other hand, plastic is a resource that life could exploit and some already does. So it might just be a matter of time before plastic rots away like trees do.