A friend of mine IMed me this link for a product called the BananaGuard:.
Are you fed up with bringing bananas to work or school only to find them bruised and squashed? Our unique, patented device allows for the safe transport and storage of individual bananas letting you enjoy perfect bananas anytime, anywhere.
The Banana Guard was specially designed to fit the vast majority of bananas. Its other features include multiple small perforations to facilitate ventilation thereby preventing premature ripening and a sturdy locking mechanism to keep the Banana Guard closed. The Banana Guard is of course dishwasher safe for easy cleaning.
It even comes in NINE different colors: Raving Red, Outrageous Orange, Mellow Yellow, Sublime Green, Skyhigh Blue, Brilliant Blue, Passionate Purple, Pretty in Pink, Glow in the Dark.