With some containers (the smaller ones being 30 each and the larger ones being 60 if I remember correctly, with 4 of each being available:
Large containers:
Alchemy stuff
Food stuff
Style materials
Trait gems
Small containers:
Gear sets
Vendor Trash (for crow missions until I finish learning Ebonshadow), and then after that, premade items for crafting writs
Intricate gear (when picked up by my main character, for my other characters to pick up and decon until maxed) + "Go Box" (potions, food, repair kits, soul gems)
Gear to swap (tank to DPS and vice versa)
What do you guys plan to do with your storage boxes?