Chest contents, top to bottom;

far left column;
[*] un-required quest items or special items (Janus' toy dragon, the Eye of the Cyclops I bought back from the head of the warrior's guild, etc)
[*] charms
[*] charms and statuettes
[*] food (meat/bread/chicken: not effective enough to use, but didn't want to throw out), poison barrels

left;
[*] quest items, gold
[*] backup equipment I might switch back to, or stuff I might eventually use (ie the Dragon Shield while I was using a two handed sword)
[*] empty
[*] potions, equipment with spell bonuses (Pickpocket, Repair, Identify, Traders Tongue) that I would occasionally need

right;
[*] valuable weapons to be repaired before selling
[*] valuable armour to be repaired before selling
[*] repaired equipment to be sold
[*] broken equipment, potions, traps, etc ready to be sold

by the shrines
[*] The two outside chests were empty. That style only weighs 200, and I used one to steal before getting the book from the thieves' guild (I didn't think to use a sack of grain, with a weight of 100)
[*] The inside chest was usually empty, but I would dump stuff there I didn't want to sort out at the time.