The Challenge : build the cheapest head lamp possible, both in initial costs, and cost of running the lamp over time, in buying new batteries.
Step 1: Cut Off Piece of the Board
Cut off a piece of the board so that there are at least 4 holes, two for the wires, and two for LED leads.
If you want to make a super cheap headlamp, skip this step and just solder the led to the wires coming off the battery pack. The board does help to support the connections, so it might help to keep it from falling apart.