What two-word term describes a small gift tucked into a Christmas stocking?

What two-word slang name refers to Australia, the smallest continent? Which giant relative of the dugong and manatee, found in the Bering Sea in 1741, was hunted to extinction by about 1768? What two-word term is used for a hired underworld assassin? Which two-word term describes a little-known long-shot candidate who wins a nomination, as James K. Polk did in 1844? What two-word term names the soft, fluffy pad used to dab makeup onto the face? What two-word term, common in Britain, means a tuxedo? What two-word term describes an audition that's open to everyone? What two-word term describes an enlisted soldier of the lowest rank?