I think a longer thread would be what other people have found in aircraft I've flown. A couple of people will have found stopwatches I've lost, several will have found pencils, and more than a few will have found clip-on sun-glasses.
As for what I've found... apart from the usual half-drunk bottles of water, half-eaten sun-softened packs of chewing gum and so on, nothing very interesting at all. Except for a pen which had fallen through the floor of a Super Cub and lodged itself quite nicely next to the control column, ready to jam up as soon as the aircraft was put into the correct unusual attitude
FFF
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