Arun used one of the many soldering station in the lab ans some of the electrical materials in order to repair several pairs of his own headphones.  These were over-the-ear headphones with multiple parts, and yet it took Arunpreet little time to fix a pair.  This kind of work is a breeze in the Design and Build Lab, and there are many potential branch off projects someone could embark on.  One could build their own pair of headphones, build a headphone case, or repair a different part.