Not on a ride, nor today, but yesterday I was heading towards the horrible market via a tortuous route*, when I spied, on the approach to a roundabout, a Black Thing with the appearance of a mobile phone or perhaps just a weatherproof mobile phone case. Once I had left the roundabout I parked up, walked back and retrieved the Black Thing, which had escaped being run over as it was between the expected wheel tracks. On closer examination it was in fact some kind of Tricorder courier delivery data wotsit in a rugged case. Poking around the menu I could see roughly where the driver was headed, but not exactly. Poking around some more and using teh Mitey Brane of the Intarwebs I deduced it was a Royal Mail gadget, so once I had stocked up on Toothy Comestibles I drove to the local delivery office and handed it in. I'm assuming it had been on the dash board of an open windowed Royal Mail van before it made a bid for freedom.
*Tortuous Route courtesy of WSCC who have closed roads in my manor so everyone going to Mr Tesco's Emporium has to go round the Big Roundabout. That's progess.