The company said that about a quarter of the lost property had been reunited with its owners.
“Misplacing a personal item can be a stressful experience, so we use technology to help make it easier for people to get their belongings back,” said Andy Morison, the firm’s head of digital and customer experience.
“We encourage people who misplace their items to use our NotLost service via the website which has helped us effectively manage lost property and minimise stress to affected passengers.”
Passengers who reclaim items pay a £1 administration and storage fee, with a postal return option also available.
Items left behind in previous years have included a bar stool, a Donald Trump toilet roll and a letter detailing unusual fantasies.
Last year a suitcase full of retro adult magazines topped the list.