The LEGO Ideas theme, active since 2010, features a diverse array of minifigures based on fan-submitted designs that have been turned into official sets. Key minifigures include those from popular sets such as the "Women of NASA" with figures like Margaret Hamilton, Sally Ride, and Mae Jemison; characters from "The Big Bang Theory" like Sheldon Cooper and Leonard Hofstadter; and figures from licensed sets like "Ghostbusters" with the original Ghostbusters team, and "The Flintstones" with Fred, Wilma, Barney, and Betty. Each minifigure in the Ideas theme is uniquely detailed to reflect the original fan design and the specific theme of the set.
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