Plastic
Why get rid of plastic. Even if they find it, what can they do with it? Are you not telling the characters that they are in the future as a big campaign surprise (I am doing something similar in my campaign.....come level 20 and I am blowing the lid off and completely changing the campaign)?
What about using plastic as a fun game device. I am envisioning plastic zombies. Fun little animated golem/undead creatures. Burn them and they keep coming, just a little bit melted.
Why get rid of plastic. Even if they find it, what can they do with it? Are you not telling the characters that they are in the future as a big campaign surprise (I am doing something similar in my campaign.....come level 20 and I am blowing the lid off and completely changing the campaign)?
What about using plastic as a fun game device. I am envisioning plastic zombies. Fun little animated golem/undead creatures. Burn them and they keep coming, just a little bit melted.