App Box for Dropbox (was DropDrive for Dropbox, was App Box for Dropbox, was App Drive for Dropbox) allows you to access dropbox from your menu bar.
Note: The app launches in the menu bar with a Dropbox icon. If you have too many apps in your menu bar or your menu bar is filled with text, click on the Finder icon in the Dock (smiley face on the bottom left) and App for Dropbox should appear on the right side of the menu bar. From there, we recommend going to the preferences of the app and creating a keyboard shortcut to open the app anytime without needing to see the icon.
Note: You must be logged into Dropbox.com in your default browser in order to download files.
Updated on May 21 2017
Note: Currently available for $0.99