Did Ancient Greeks really have laptops? (pics + vid)

Online conspiracy theorists have made the bizarre claim that an ancient Greek funerary relief depicts a modern-day laptop computer. Is this proof that time travelers from the twenty-first century visit the ancient Greeks and introduce them to the use of laptops?

The funerary relief claims to be a scene from Pandora’s Box but the slave girl appears to be holding a tablet.

In another image from a vase painting at around 500 BC a man is depicted with a wax tablet.

Who is the God Poseidon talking to?