In Wynncraft, there's are a few horse items that are unused - the horse armor. They could either be implemented as actual items (which has been suggested so many times that I don't think I need to), or as cosmetic items. You would be able to get iron, gold, and diamond horse armor from crates. Iron horse armor would be rare, golden horse armor would be epic, and diamond horse armor would be godly. Horse armor would be unable to stack with itself, or zombie and skeleton horse skins (due to them being unable to wear horse armor). You would equip the armor from the pets cosmetic menu, like the current horse skins.