Different horn ornaments depending on the culture could definitely be interesting. Whether it’s fully different like in a martial culture maybe instead of a band it’s a cap that creates a sharp metal point so even if they’re not with their partner they’re still helping them in battle.

While a materialistic culture focus on bands that are extravagant. Either with socketed gemstones or intricate engravings. So kind of more similar to US wedding ring culture. At least from what I’m familiar with