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Okay, took a bit of a break to try to avoid burnout on this seed, but back now.
Anyway, off to the south room from that lava pit in Fire Temple. I can do Forest Boss now, whenever I find the right enemies to get there. Oh, and PG himself, of course.
The Time-locked spider to the north is much less interesting, especially after how much I've been inundated with these things.
Boulder maze bottom isn't very useful, though I do at least use these (unlike Deku Nuts).
...Well, that's a check and a half, at least.
Minor detour on the way to the fire race room for a bit more progress toward one of the MM fairy checks.
I got excited when I saw how fancy the box in the top prison in Boulder Maze was, but it was just bombermice.
At least the one in the shortcut prison performed to expectations...
The Strawman Elevator has bugs to squash...
...and a box to open. Never mind the text; this is a ten-pack (yet another "compress all of these items into one check" option).
Fire maze northeast is nothin'.
And there's nothing else I can do in Fire Temple for the moment; might as well do the bean checks.
Not that there're many of them, but still. They do turn out to be important... or at least the Colossus ones do.
...feels weird to say that beans are progression, or required items.
Speaking of which, that just unlocked a check in Child Spirit... in the process of which I figure out how to check the chest between the statue's knees without magic. Why didn't I think of the old "Deku Torch" approach before? It's required even in vanilla!
Off to check OoT Storms! This unlocks some stuff back in Fire.
I have other priorities for now, though. Such as finally getting my OoT magic meter! 
That, conveniently, unlocks a check in the hole right outside Gerudo Valley.
Back to Death Mountain I go.
Two new places I can go in the Crater with my new Hammer.
They aren't exactly what I'd call "lucrative" but they're at least not worthless.
Quick dive into the well to do the Fire check Hammer gives me; everything else here is locked by Flare Dancer and Volvagia. Maybe Keese too; depends on whether I can get through that front room without them.
A quick stop at the Ganon's Castle fairy gives me even more follow-up checks.
This seems to be the end of the chain, though.
Almost forgot the guy at the chest game is a check too. This is... surprisingly convenient, actually.
I'm basically out of checks in OoT finally, so back to MM to turn in the Tear.
Deliver that potion I just got to the invisible man real quick.
Healing checks. Specifically, the vanilla transformation locations. Turns out they're both worthless.
Owl checks. One of which leads to another OoT check or two.
Feels a little short to me, but I really don't feel up to continuing right now. Probably gonna take another day off to try to sleep this off; I think I'm just tired.