Cucco Killing
Normally in other Legend of Zelda games, killing a cucco would cause a swarm of them to start attacking you. However, in Twilight Princess, killing a cucco allows you to control it for a short while.
Stop Rotating Platform at Flight by Fowl
When you are on the platform where you land from the cannon look on the roof and you will see one of the wind switches hit it with your boomerang and it will stop the rotating platform
Easy Access to boss room in Water Temple
If you have the boss key, you don't have to hit the last switch to raise the water level to let you swim into the pivot. Instead, make sure the rotating staircase is straight below you, then you can Clawshot up to the chandelier, and jump to a place on the staircase so you land next to a decorative piece. If executed correctly, you should stop and not slide down the railing. Now you should be able to drop down onto the pivot where the boss door is located.