2) manufacturers of throat lozenges, such as Jinsizi Shoubao, can take their products as small prizes and also play a role in publicity.
3) Art training institutions are everywhere now, and they all need publicity.
4) Music equipment suppliers
5) Let them broadcast your game on the website near the campus, and encourage all the students to watch it on their website.
6) If you really can't find it, you can look at some manufacturers of drinking water and clothing. Your senior should be very experienced.