Head On Posted on May 12, 2013 by Melissa Now that you have the necessary materials needed, travel to The Marketplace and work with Celo, at the Gadgets Stand, to create a powerful Arrowhead. Click on Celo to work with him. Related posts: Hit The Spot Workshop Requesting Items From Friends or Harvesting From Forest Escape Head Gamemaker Seneca Crane joins us in The Hunger Games Adventures!