Northern said these cases are among more than 32,690 losses recorded since July 2022.
Other unusual lost items included a cupboard, a wig, crutches and a 10kg box containing chicken breast.
Mobile phones and laptops are the most common lost items.
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One of the passengers left his bicycle on the train while wearing a helmet.
Alex Hornby, Northern's commercial and customer director, said: “We understand that losing something can be very stressful, so we make sure your belongings are secure before you get off the train. We often remind our customers to make sure they have everything.”
“Luggage left unattended on trains or stations can trigger security alerts and cause delays and disruption.
“When passengers report lost property, our staff work hard to track and reunite them, which is no mean feat.”
