For those of you who are interested in making a character (who must be at level 25 or greater) a physical reflection of 101%, you can quickly get some damn powerful items from the titular "Head" blind monk in the Thieves' guild quest "Arrow of Extrication". The NPC holding the quest item is not only a good candidate because he always has one randomly generated powerful ring or accessory on his person (when killed), but because items are randomly generated when you make a map transition, the small room the NPC is in lets you save outside and reload the game (and map) to let you try again in getting that one item you were looking for. Naturally, high luck helps, but luck enhancement spells also affect the outcome.

Your basic goal is to get two accessories that offer "physical damage reflected" at around the 30 - 40% mark and a (quest award) shield that offers the same thing. With all three items thus equipped, you should be damn near invulnerable. For magic, go after the Mundane Ring, and with the ability to enchant "magic protection 25%" or higher on a few pieces of armor, you can make yourself invulnerable to magic attacks. The only thing left to hurt you will be arrows, but that should be an easy task. Note -- for such high percentages, you need to acquire items and weapons and armor at level 25 (or greater for some Dark Brotherhood items).