Hundreds of us leave our mobiles, umbrellas and bags on the bus every week - but spare a thought for the student who left nearly €2,000 in cash.
It's one of the biggest amounts of cash left behind on Dublin Bus this year, but it was reunited with its thankful owner through the company's Lost Property office the next day.
Over 1,000 items a-month are logged by Dublin Bus, having been left behind on the company's buses, according to Sean Hyland, who works in the Lost Property office in Earl Place.
"We would get money in regularly, left in purses and wallets," he told the Herald.
He revealed that the €2,000 was in a handbag left behind by the female student in September and was intended for a down-payment and rent on an apartment. "It was a bus driver who found it and bought it in," he said.
For a nominal fee of just €2, the office reunites people with their possessions.
"We get a lot of bags and holdalls. We would get between 180 and 200 a-month, with gym gear, school books, uniforms and that kind of stuff," he said.
At the end of their shift bus drivers bring any items they find into their depot where it is logged and then brought to the lost property section.
"A French lady came in and told me that she had left her BlackBerry on the bus. I went through all the phones, and I told her there was no sign of it. She told me she had been informed it had been found."
Sean said that after searching high and low, he again told the woman it wasn't there - only to find out that it was a black beret rather than a Blackberry he should have been seeking.
He has seen it all down through the years, even a live rabbit was left behind.
"Probably about two-thirds of items are claimed. If there is identification in it, like an address, we write out to people," he said.
Sean said laptops and phones tended to be claimed within a day or two. Any suitable unclaimed items are sent to charity shops, he said.