A model aeroplane is used for presentations and testing. Model planes are also used for fun. They are used model-plane clubs, aeroplane company headquarters and studios. (Bedroom, in my house)
The ancient Germanic tribes and the ancient Scandinavians used runes as an alphabet. Prior to that, they used runes for magic purposes, such as casting lots (divination) and spells of protection.
Yes. Horses were used but eventually taken back to Egypt because they weren't of any use at all. Mules and donkeys were originally landed to be used as water-carriers for the troops on the front...