I feel so upset. My dad made a little Christmas hamper for my toddlers, with things like the Organix snacks in. Some of it was opened so they could eat it, and DH mistook the paper bag it was in for recycling 
Totally not the end of the world as it was only a few snacks, but I feel so guilty because of the thought and care that had gone into choosing the bits. Also the fact that it wasn't mine but my children's. He is usually obsessive about sorting through the recycling too, I have no idea why he just dumped the whole bag!
So make me feel better Mumsnet. What have you thrown away by accident?