I found something a little odd a while back that doesn't seem very useful, but I don't know. It might be something significant.
There's a little spot to the left of the rock triangle beneath the wood plank in Gerudo Valley where diving will cause you to hop a little bit out of the water after surfacing. It's just to the left of the left-most rock.
Odd, but doesn't seem too useful.
Oh, and I found this interesting:
http://www.youtube.com/watch?v=iwi9OL1CcII&feature=channel_video_titleI commented on it, but I'll post an improved version of what I posted below for convenience.
This could probably be used to get under the ice of Zora's Domain as an adult and bypass the gate that blocks the Water Temple, right? I guess you could also use it with Bottom of the Well (Green Bubble and small pool in front of Triforce) to get under the bone piles for early Bombchus and maybe in Gerudo Valley to bypass the gate and guards as a child. (Plant bomb in shallow part of the pool beneath the bridge, die from the blast while swimming, and then listen to Navi. She'll have to be trying to tell you something.) And by bridge in Gerudo Valley, I mean the plank of wood, not the actual bridge. By the way, listening to Navi has a much smaller window in the 3DS version than it does in the original.
We know about that glitch, glitchesandstuff found it, I chat with him all the time in the IRC.
Also, we already have a way to get to spirit temple as a child, I do not see how this would make it easier for us.
This should not let us clip through the pile or the gates. We have only clipped through NPCs with WWT. :s
Try to get into the basement of BotW while the upper room is loaded, this should allow us to get chus.
And yes, it is much harder to do on 3ds, I was going to make a video of it on 3ds the day it was discovered on n64, but never got around doing it as I always failed while recording