A prosthetic leg, a hamster and a wig are among items left on trains in the last few years.
Train operator Northern said they were among more than 32,690 incidents of lost property recorded since July 2022.
Other items left behind include crutches, an ironing board, a cupboard and a 10kg box of chicken breasts.
The most common items left behind were phones and laptops.
One customer left their bike on the train while they were still wearing a helmet.
Another contacted the operator in an attempt to track down a plain white handkerchief.
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Northern’s commercial and customer director Alex Hornby said: “We understand that losing something can be extremely stressful so we often remind customers to make sure they have all of their personal belongings before leaving the train.
“Unattended bags on our trains and at our stations can also prompt security alerts which cause delays and disruption.
“When a passenger comes forward to report lost property our staff work hard to track down that item and reunite them – but it’s no mean feat.”
