Although the weekly quest in Valdrakken awards half a Spark of Awakening used to craft max level gear, it appears players can earn another half this week as random loot from dungeons and raids too, allowing them to upgrade a piece of gear in the first week of Dragonflight Season 4!
While previous Seasons also allowed players access to a full spark within the first week, the extra half was awarded from a quest, making it pretty hard for players to miss. This time, however, it's not quite so obvious, as one of the splinters isn't attached to a quest at all.
The first Splintered Spark of Awakening is awarded from the weekly Last Hurrah: Dragon Isles quest in Valdrakken, tasking players to complete various world objectives from one of the three major content patches. These quests are also a great source of catch up 480+ gear.
But a second Splintered Spark of Awakening can also be obtained as a random drop from Mythic+ dungeons and raid bosses, allowing players to complete a full Spark this week! So far, it appears that players can only obtain one splinter this way, and it's not currently known whether this will repeat next week or if the drops are simply meant to be an alternate avenue to obtain these sparks.