A currentgift is a physical manifestation of the current in people. It is a central feature in Carve the Mark by Veronica Roth.
All people develop a currentgift during their life, usually sometime during adolescence. Most instances of currentgift seem to have a direct relationship to something powerful that is happening to the person during this crucial developmental stage of their life; Cyra's currentgift comes about during as a means of keeping her brother Ryzek away from her, and Akos's currentgift manifests when he needs to break free of current-imbued handcuffs.
Currentgifts are also seen to be able to evolve. A doctor tells Cyra and her mother this when Cyra is small, and her currentgift does in fact evolve over the course of the novel as a direct result of very powerful events.