I have forgotten things like…
I have forgotten things like Fast Trak transponder and garage door openers in tradeins. I have been fortunate that all dealers I have worked with made a point of helping me search the vehicle for any personal items emwhen I turned in the vehicle. When we somehow missed stuff I got a call from the service department to collect a box of stuff they found when prepping the vehicle for sale or auction. There have been items I was sure I left in the trade that never showed up, but the dealers have always been great about helping us search the vehicle.