wall sockets
pickaxes
by hand
then rope or nothing
NASA needed a way to drill under the moon's surface. So they invented a cordless drill, and soon after many other cordless tools, that was lightweight, small, and battery-powered.
Before the thermometer was invented, people relied on various methods to gauge temperature, such as observing natural indicators like weather patterns, the behavior of animals, and the state of water (e.g., freezing or boiling). They also used simple tools like a stick or metal to feel heat and cold. Additionally, some cultures utilized clinical signs in humans, such as skin color and warmth, to assess body temperature.
Buttons.
bikes
benches
pickaxes
carriages
Brief case
We used letters.
horses or their feet.
A pen and paper!
they use to walk
Fingernails!!
Horses