Extra Storage Slot
This is good for farmers that want to save stones in storage and then sell them.
1. If you are in a guild, then quit the guild.
2. Create a guild a the Guild Registrar. ( It costs 20k gold to create a guild)
3. go to a safe keeper, and since you are the guild master, you can exploit this because only you can take items from there, so it is a nice way to store things.
Tip: You can store elemental stones in your private storage and armor or weapons in the guild storage.