Sites of Interest
Location: Ice Age Alley
Items: Red Balloon, Green Balloon, Blue Balloon
Walkthrough: You need Expresso to reach the bonus barrel. The spot where you should begin flying hard is just before the Metal Keg. Instead of following the bananas to the keg, fly hard to the right until you reach the hidden land mass where the bonus barrel sits pretty.
In this room, you have the choice to pick among the three items - Red, Green, or Blue balloon. To get the item, just match the items on the three barrels. It doesn't matter which barrel you touch first.