This game goes out of the way to hide storage chests from you.
The storage chest is the 'stash' where players can store items they have collected around the world. The stash can hold up to 155 (300 in Re-Reckoning) items and is located inside each of the player homes and magically connected; therefore, each stash holds the same content as the other.
Stash locations are as follows:
Gossamer End - Canneroc
Sandstone Villa - Adessa
Aron Excavations Office - The Hollow Lands
Archsage Quarters - Rathir
Seawatch Castle - south of Caeled Coast
Champion's Manor - House of Valor (DLC Only)
Gravehal Keep - Legend of Dead Kel (DLC Only)