ancient egyptian

in social studies when are doing stuff about the ancient egyptian and here are some stuff i find out 

                                                               this is what the door locks look like 

The earliest door lock consisted of a wooden crossbar on two wooden brackets mounted on the door and the door frame. ... These wooden pin tumbler locks with keys were used as far back as in Ancient Egypt, which is why they are often called Egyptian locks.

The wigs they wear 
Egyptian law prohibited slaves and servants from shaving their heads or wearing wigs. The base of an Egyptian wigwas a fiber-netting skullcap, with strands of human hair, wool, flax, palm fibers, felt, or other materials attached. ... Wig hair was arranged in decorative styles throughout all the kingdoms of Egypt.

                                                                               
                                                                   but the Egyptians also contributed a innovation to dental hygiene, in the form of toothpaste. Early ingredients included the powder of ox hooves, ashes, burnt eggshells and pumice, which probably made for a less-than-refreshing morning tooth-care ritual 
      

Around 3,500 BCE (a long, long time ago), the Egyptians used the shadows the giant stone obelisks cast on the ground to tell the time of day. Each obelisk was built to tell a story. But they worked very well as shadow clocks. Later on, the ancient Egyptians invented the first portable timepiece.