I just did a session. I used a plastic container with the lid on as a target. Clicked for every nosetouch on the lid. Then I let the dog take the ring from me and made him drop it. I saw where they dropped it, so I put the container in that spot, so the ring would fall on it and then put the treat in the ring. I was surprized that Cooper got the hang of it real quick. I tested it by handing the ring away from the container and he put it on the lid!! Then I put a cone on the container and clicked for every drop that hit the cone. Once the ring accidentally fell around the cone, so I gave a jackpot. Then he put in on the cone again, another jackpot and then ended the session by play.
Jinx, on the other hand, was not as precise

It took her a while before she figured out, she had to nose touch the container. Then when I introduced the ring she randomly tossed it around

I had to move the container around a bit, but she got it in the end. Then I put the cone on the container, but because she tosses the ring, it hardly even touched the cone

So I have to start clicking her for a more controled release of the ring.
Funny to see how Cooper is the thinker, he takes his time, really thinks about what to do. While Jinx is a do-er, she is energetic but is more the trial by error type

I'll see if I can do another session later today and try to film it.