Eat & sleep on a regular basis
Limit fast travel when possible
Always park my character at home when I'm done playing for the night, sitting in a chair then save the game.
Some character specifics are:
My werewolf cannot sleep unless she eats a human before bed. So after midnight she undresses to naked, goes for a run out at night in the wild looking for a cave or fort where evil doers or vampires might be, then shifts, kills, sleeps in their cot covered in their blood, wakes in the AM, finds nearest water for a bath, then dresses in armor and returns.
Use pelts to make leather to improve items before selling them. I consider it repairing the stab holes I made killing whoever wore it.
Kill all wildlife except for foxes and goats for leather.
Practice destruction magic on anything that moves for one character.
My Male Orc is badass and punches anyone in the face who says something disrespectful. Guards, jarls, you name it. Gets him in some trouble on occasion but nothing he can't afford or fight his way out of.
Wear clothes to sell goods and have a mead after a long day of adventuring at the pub.
If my male orc dies in combat, he will stay home healing for a week, then throws away all the gear that let him down in that battle and goes out into the wild naked with nothing and starts over to redeem himself and purge himself of all the unlucky gear that must have caused his serious injury (a death requiring reload). Then he will return to the cave/crypt where he was hurt (killed) and claim his revenge. Takes him a while to rebuild everything but it gives the game purpose and makes it fun bringing in emotion where the game creators left it out.


Also non of my characters fast travel. And I don't do all quests with a single character, each character has a predefined path (just a frame at the beginning, not the whole thing) and will usually join/do/help in it's character. Each character also has a different beginning. I saved at riverwood, so from there I change the race and I set myself accordingly. For example, for characters who came from Morrowind I give them some dark-ish robes, give em more dirt, layered clothes (usually the college robes or something alike) and I "start" their path from the 'gate' between the Velothi mountain down south-east. People who have richer blood are usually clean, some bandits/thieves/assassins start in jail, lawful good characters avoid battle, and turn around when threatened by bandits in the wilderness and the list goes on for miles.

