Star Trek: Voyager, Plasma Charge

original movie prop

As first seen in third season TNG episode The High Ground, terrorists plant this unnamed explosive device on the main warp reactor of the Enterprise, and Geordi has only moments to detach it and have it transported away from the ship.  Encountered again in Voyager episodes Dark Frontier and Collective, where they are described as spatial charges and plasma charges, respectively; on both occasions, Ensign Kim is tasked with destroying Borg shield generators with them. 

Resin, metal, and acrylic, with metallic gold, black, and bronze painted detailing. Single red indicator light flashes and three translucent side windows illuminate on flicking a toggle switch on the face. Interesting note: This prop has an Enterprise-style inventory sticker on the back, suggesting use on that series as well.

From It's A Wrap.