I literally just created new containers, that wont respawn, and named them appropriately. Personally, i enjoy organizing my things, and created a mod so i could do just that, without confusion, and going from container to container, trying to find the right one to put my super awesome unique weapon or armor i just found into it for safe keeping. This will rewrite over your frostcrag spire esp, so i suggest using the oblivion mod manager. There are directions inside of the zip file for standard installs  though. 

Features:
-Added named chests to the vault in frostcrag spire
-Added a chest in the living area for ingredients
-Added two chests in the main area, one for items to enchant and one for soul gems.
Requirements:
Wizards Tower DLC (Frostcrag spire DLC)
Install directions:
1: Install frostcrag spire
2: Install the frostcrag esp inside the zip file into your Data folder and click yes to overwrite the old frostcrag esp. (SAVE YOUR OLD FROSTCRAG ESP OR YOU MAY LOSE IT FOREVER.)
3: Profit. (no. Seriously. The organization should help you profit and make gold in the game. There's a chest called "loot to sell".)