Duplicate Items
Connect to a multiplayer game and have one player give all items to the second player. The player that gave away the items then restarts the game without saving. When that same player starts the game again, all of the items will still be in player one's inventory, and still in player two's inventory.
Lose Some Weight
All you have to do is enchant a piece of armor that gives strength to you or get a piece of jewlery that does the same thing. When you come across items you do not have enough encumbrence for, equip the strength accessory or armor, take the item, then swap the strength-augmenting accessory for your original equipment.
Submitted by gamer