NYPD detectives found an old toy and worn clothing that are “age appropriate” for Etan Patz hidden in the New Jersey home of the boy’s confessed killer, law-enforcement sources told The Post yesterday.

Investigators planned to test the items for DNA — and hope they will serve as key evidence in the murder case against 51-year-old former SoHo bodega stockboy Pedro Hernandez, the sources said.

Cops were stunned by the discovery Wednesday as they executed a search warrant at Hernandez’s home in Maple Shade, near Camden.

“When they were found, the air was sucked right out of the room, [it was] a very emotional moment,” a source said.

The clothes and unidentified toy appear to be from the late 1970s. The clothes were worn and “not clean,” the source said. “Imagine what your drawers would look like 33 years later.”

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