The Hunting Horn is a traditional instrument across Europe. Its played in many instance like in the welcoming or if a animal is down, it shows respect and tradition.
How: Under the category consumables with a weight from 0.5kg (the space in the inventory). When equipped, the player can play different horn calls!
What do with it? You can have tradition in the game, show respect and have an more immersive gameplay that is more realistic. Even roleplay or to have a traditional hunt. Also you can play different audios for different situations (look youtube links). I think it would be a great detail to add to the game which wouldn't need a big update, that many would enjoy.
Also it is already in the Hunter classic https://youtu.be/JM0ujzP2rRA?si=0OwMS3p4-sIbdvVH
https://youtu.be/rs65hIfHks0?si=dCrFo7FwUsJec8y1
https://youtu.be/RGIRkfjrE-Q?si=4xg4ZRq43kP-D4X5
https://youtu.be/RO7sVMixiD8?si=zlLkt1z6kiRz-ygR