The moment I post this, I know that I'm going to find the answer to it. That seems to be how I find answers.
But until then I will have to ask regardless.
So I'm in the Spirit Shrine. I haven't found a single key yet. I only have access to the bottom-middle part of the dungeon so far. The best chance I can see to make progress is in the lower-left corner(ish) where I see a hookshot puzzle with red and blue popup blocks. I really don't see a way past there. What's the ideal solution there?
EDIT: To get past it, I did something that's likely unconventional. I faced left, fired an arrow, and IMMEDIATELY hookshotted south so I'd end up on top of the red block as it rose. Sneaky sneaky little devil.
EDIT: Okay, actual question, please. Where do I turn in the Omega medal and the Din's Medal? Quite lovely fights. Well done.