Curling

Curling, also known as "The Roaring Game" due to the sound this big ol' rock makes as it goes rumbling along the ice, is where two teams of four use a type of broom to slide a 44-pound rounded stone toward a circle on the icy playing surface. This circle is known as the "house."

Indoor tournaments have water sprinkled on the ice surface which freeze into tiny bumps called pebbled ice. They help give the stone more grip and lead to "consistent curling." Olympic.org notes curling was a continuous demo sport from 1936–1992 and it became a medal event in 1998.

(Demonstration sports were merely held to promote the sport and they had no medals. They were dropped in 1992, except for a "wushu" (kung fu) event in Beijing/2008.)

What you need: Special curling shoes which resemble walking shoes, except for the fact that each shoe has a different sole for sliding or gripping the ice, and a special type of stick (Olympic.org says "the most common is a brush or "push broom").