Apples

From SmashWiki, the Super Smash Bros. wiki

Apples are a special kind of item that only appear in the Green Greens stage. Whispy Woods will shake his branches and unleash 4-5 apples from its branches. Three things happen when you pick up an apple:

• The apple will heal you about 10%.
• The apple can be picked-up and thrown at an opponent for decent amount of damage.
• When thrown, apples can (rarely) explode.
• The apples disappear faster than regular items do.