The Metropolitan Transportation Authority said items turned in were mostly devices such as smartphones and tablet computers but also included diamond rings, trumpets, vacuums and pet carriers, the New York Post reported Friday.
Officials said no animals have been found in the carriers.
William Bonner, supervisor of NYC Transit's Lost Property Unit, said he was able to return a pair of brand-new iPads to a woman because her email was on a receipt with the devices.
"I thought I'd never see them again," the woman told Bonner.
"That's the mind-set of most New Yorkers," he said.
"But there's a lot of honest people [who turn things in]," Bonner said.