Extraordinary Options or Extra Ops is an innovative way to deliver Girl Guiding to more girls. Girls in Extra Ops participate in programs that relate to a single activity or theme, such as camping, sports, travel or the arts. They do not earn badges and use only basic insignia. Girls can choose to be members of both a branch unit and an Extra Ops unit.

Trex is an Extra Op for girls 12 to 17 that focuses on camping and the outdoors.