String of Coins (Xerosicsyos danguyi)

Also known as the Silver Dollar Plant, this member of the Cucurbitaceae (Cucumber family) is found only on the African island of Madagascar, where it naturally grows as a climber, often sending its vines high into the forest canopy in search of sunlight.  As a result, it likes a decent amount of indirect light, and as it's a semi-succulent, it prefers regular watering, but always in a well-draining soil.  Give it these basic conditions, and it will reward you with many thick strands of leathery, coin-shaped leaves!