The Legend of Zelda: Ocarina of Time Glitches

Play any Item like an Ocarina
Assign a bottle with an item inside that can be released and recaptured (eg bugs or fish) and another non-bottle item, like a bombchu. Find a raised ledge or platform you can jump off to solid ground and get on it. Release the bottled item and the recatch it so now Link is holding the bottle. Then jump off the ledge and press the button for the bottled item and then quickly press the C button for the other item before you touch the ground. Link should now be playing that item like the ocarina and the songs will have the usual effects.