What strange things have you come across among the PMD?

As an employee of a waste intercommunal waste company or sorting centre, you probably see some sorting errors many times: a composite packaging, a packaging that belongs to Small Hazardous Waste, a plastic item that is not packaging, ... But are there some items you found among the PMD that made you raise an eyebrow anyway? We'd love to know!
The purpose of this question? We will compile a list of the strangest things already found among the PMD, and make some posts from it for social media, as well as a blog for on our website.
No name of any person, intercommunal or company will be mentioned in the posts for social media. For the blog, we may mention the intercommunal or sorting centre with the item found, but only with the express permission of the submitter. So we only ask you to enter your e-mail address in case we want to contact you for this purpose.