#3. Manual typewriter
Manual typewriters had an entire subset of unique sounds that made them immediately identifiable…at one time. The keys clacked loudly as they struck the paper, the carriage lifted up with a distinct clunk when the shift key was employed, and then there was the ping of the bell warning you that you were nearing the end of the line. That meant you had to lift your left hand from the keyboard and swipe at the carriage return lever, which caused a sort of ziiiiip noise as you pushed the carriage back to the starting position.