The Legendary Blade

From publisher blurb: SideQuests: The Legendary Blade is a conceptual framework for your players to take part in over the course of an entire campaign, woven in and out of your main campaign as an ongoing subplot, with a set of intrinsically valuable rewards that lead to the creation of a unique new weapon of your choice. The specific details of how the players gather the pieces of the blade — or what quests they may encounter for each new piece — are up to you, but this module provides ideas and frameworks in which to embark on the adventure for the sword of legend.