There are also simpler ways to improve reliability: most pinball machines have more than 100 or so incandescent bulbs that need to be replaced regularly, but new machines like The Wizard of Oz are equipped with LED lighting that should last longer than the machine itself.

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Pieces of trivia are interspersed between the costumes: did you know that the ruby red slippers worn by Judy Garland in The Wizard of Oz were designed to contrast with the yellow brick road and show off the new wonders of Technicolor?

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But with the recent interest in the 1939 classic movie The Wizard of Oz, the phrase has taken on a whole new meaning.

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