The Six Chariots
In Tutankhamun's tomb, archaeologists discovered three disassembled chariots. It was concluded that these chariots were for the same purpose as the boat found in the tomb also. It was so that the person could ride smoothly into the underworld and conquer any enemies that may stand in their way.
Tutankhamun's Royal Thrones
Along with his other furniture, Tutankhamun included two of his royal thrones into his tomb, to simulate that he was the ruler of Egypt and that no pharaoh will ever truly be better than him. It has multiple gods on it, who appear to be serving Tutankhamun meals or giving him royal gifts.
In his tomb, Tutankhamun had multiple couches that have told us a lot about artisan workers in Encient Egypt. It was discovered that a couch in Egypt was equivilant to a bed today. These were most likely placed there to show that he was going to be laid to rest, and live a good afterlife.
Inside his tomb, Tutankhamun had beautifully painted chests which held beautiful treasures that belonged to him. These treasures were supposed to accompany him to the afterlife and when he got there, they would make him worthy to become a god, or worthy of being an important person in the underworld.