There is a small but growing industry in acquiring movie props and costumes. Perhaps the most famous movie memorabilia are the ruby slippers from "The Wizard of Oz." Five pair of the original shoes are known to exist. One pair is on display at the Smithsonian and made an appearance on the red carpet at last night's Academy Awards. Debbie Reynolds owned the "trick" pair that curled up under the house. Years ago, Reynolds invested money into movie memorabilia which she planned to sell to help provide for herself during retirement. At auction in 2011, her ruby slippers fetched $510,000.
Movie buffs have begun displaying props as part of the decor of their home theaters or media rooms. The internet has made shopping for props easy for anyone.
Favored props from more contemporary films were those produced by WETA Workshop which produced thousands of highly intricate (and in many cases beautiful) props for the Lord of the Rings trilogy. Troika Brodsky is the proud owner of the largest private collection of LOTR film props in the world--second only to the official studio archive in New Zealand.