Remember needing to make a Sunstone towards the start of the game when you where playing as Vaan? Well you can carry on making those and make some easy money from it.

LET'S MAKE SOME SUNSTONES!

Visit the Nomand Village in Giza Plains during the dry season (after the escape from Ondore's Estate) and talk to Masyua about Sunstones; she'll give you a Shadestone. You can then use the Dark Crystals situated around Giza Plains to charge the Shadestone until it becomes a Sunstone (as you did previously in the main story). The faster you complete the task, the better the quality of Sunstone you will generate, and the more lucrative the reward you'll receive them Masyua.

THE REWARDS

Time:	Quality:	Reward
Less than 7 minutes	Highest grade	200 Gil, Potion x2, Holy Stone
Between 7 minutes and 15 mintues	Nice stone	150 Gil, Holy Stone
Between 15 minutes and 35 minutes	Acceptable quality	100 Gil
More than 35 mintues	Bit poor	50 Gil