The Deku Leaf is an item from The Legend of Zelda: The Wind Waker that lets you glide through the air using magic, or blow things around when you wave it. You acquire it from the Great Deku Tree in the Forest Haven, by climbing up to a high tree branch using Baba Buds.
Related ThreadsDeku Leaf - last post by @ Oct 19, 2013
My deku leaf died when I needed it in the wind temple - last post by @ Jul 29, 2006
Dead Deku Leaf - last post @ Dec 1, 2004
Zelda wind waker deku leaf help! - last post by @ Mar 18, 2008
deku leaf ruined - last post by @ Oct 24, 2007