An item that I rather like is the idea of is the magnetic harness that you can get from Jerynn, but currently she is the only one the item works with, despite there being a fair number of taurs in the game. As far as i know, she is currently one of only 2 underslung scenes in the game, the other being a much harder to trigger one from Bimbo-Domme Siegwulfe. and even the second one doesn't use the item.
Even just having a few scenes where you can gift the reciprocal magnetic catches to friendly taur NPC, and they can do a few scenes, shopping, just walking around as they use you, it could be a good interaction for haley to volunter to act as her portable onahole so she can walk around and interact with others without her balls swelling. Or if you encounter a hostile taur, not that many seem to exist, they can find the magnetic catches on you, take them, and then when you lose again, they will use you, perhaps even have a scene of them fighting someone else while still using you, or just travel across the map, then let you go at a random point.
Even just having a few scenes where you can gift the reciprocal magnetic catches to friendly taur NPC, and they can do a few scenes, shopping, just walking around as they use you, it could be a good interaction for haley to volunter to act as her portable onahole so she can walk around and interact with others without her balls swelling. Or if you encounter a hostile taur, not that many seem to exist, they can find the magnetic catches on you, take them, and then when you lose again, they will use you, perhaps even have a scene of them fighting someone else while still using you, or just travel across the map, then let you go at a random point.