Once you gain full control of the airship and do the visit to Bevelle, you can revisit the Chamber of the Fayth in some of the temples to find some free items. Note that Dark Valefor is guarding the entrance to Besaid, while Dark Shiva is outside of Macalania Temple. These are just some free items that are probably not worth the effort, as you have to redo the Cloisters of Trials again to gain access to the Chamber. Most of these items can easily be gotten elsewhere. You cannot revisit the temple in Bevelle and the one in Baaj has nothing.
|Besaid||Evasion Sphere, White Magic Sphere, two Potions, Hi-Potion, Elixir|
|Kilika||Luck Sphere, Accuracy Sphere, Defense Sphere, Agility Sphere|
|Djose||Luck Sphere, Magic Defense Sphere, Agility Sphere|
|Macalania||Magic Sphere, Magic Defense Sphere, Accuracy Sphere|
|Cavern of the Stolen Fayth||Strength Sphere|
|Remiem Temple||Defense Sphere|