Ages ago, I was working for an airline, both charter and schedule. So when schedule we had a curtain to separate first clase, but we took it of when charter, and we just put it in an overhead locker.
One day disembarking a charter flight we realise this lady leaving the a/c with one of the curtains as a shawl. So we made her aware of it, and then she just said: " Oh I thought it was my shawl" but didn't even have one with her!!!! And Imagine the curtain, blue, with big letters in yellow saying Air Europa!!!! Lovely shawl