Lost ereader in Ryanair flight

I left my ereader (Papyre is the brand) in the 2nd September Ryanair flight from London Stansted to Dublin. I have checked with Dublin airport's lost property as well as with Ryanair's at Dublin and Stansted but with no luck. The ereader has a black leather cover and the book coming up as currently reading is "The War in the Air" by H. G. Wells. I would appreciate if anyone could help me. Regards Pedro