Glass has been around for over 5,000 years. Glass beads and other objects have been found in ancient tombs. So, it was invented early in man's history.
However, glass was very rare and not used as we use it today. Therefore their cups were made of wood, or baked earthenware.
bikes
Buttons.
benches
pickaxes
carriages
horses or their feet.
Brief case
wall sockets
We used letters.
A pen and paper!
they use to walk
Fingernails!!