A hamster, a wig, and a prosthetic leg are among the more than 32,690 items left behind on Northern train services.
The train operator has been keeping track of misplaced property since July 2022, with phones and laptops frequently left behind.
Northern is urging passengers to check for their belongings before disembarking to avoid such losses.
Leeds and Manchester Piccadilly stations are the most common locations for lost property, but forgotten items regularly appear across Northern’s network.
Other peculiar items include a cupboard, crutches, an ironing board, and a 10kg box of chicken breasts.
One passenger even left their bike on the train while still wearing their helmet, and another sought help locating a plain white handkerchief.
Alex Hornby, commercial and customer director, 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.”
To find out what to do if you leave something on a Northern train, visit: northernrailway.co.uk/travel/lost-property.