Spring

The Spring is an item that appears in Super Smash Bros. Brawl. Like a few other items (Peanut, Peach, etc.), the Spring does not appear regularly like the typical item, but appears after a certain attack - in this case, Sonic the Hedgehog's Spring Jump. If Sonic does this in mid-air, the spring simply falls off the stage. However, if he performs it on the ground, the spring temporarily sticks where it is, allowing other players to use it. Presumably, it will disappear after a certain amount of time, similarly to the Flipper.