Miscellaneous Useful Enchantments

You can enchant resistance to disease, damage or magic as well. These would be good enchantments to also put on armor pieces. Any creature in the game can give you a disease and the only way to get rid of it is to use a cure disease potion or chew an alchemical ingredient with cure disease as its first effect (such as Mandrake Root), or else get your Restoration up to 50 and buy the Cure Disease spell. This is especially important if you're going to be hunting vampires regularly, as you can contract Porphyric Hemophilia from them, which is the vampire disease ingame. If you find you've gotten it, get rid of it quickly with Cure Disease or at any Temple Altar. (If you don't have any bounties or much infamy, that is)

Having some resist disease/poison enchantments give you some protection, so if you run across any, use them. Also, anything that reflects damage is fantastic. You can equip it and then watch lower-class enemies such as rats and mud crabs kill themselves when they attack you because the damage reflects back on them. Unfortunately you cannot enchant things with reflect damage or spells, but you can find things in dungeons sometimes, or get them as rewards for quests, so be on the lookout.

Seriously. I once had about 66% reflect damage (total, of three enchanted things), and when rats would jump on me, they would die within three jumps. Same for mud crabs. Goblins would take a little longer, but if I kept my health up while they attacked, it would be fun to watch them eventually kill themselves. Or bandits or highwaymen. The list goes on.