I always have a tankard. if I dont have one then my character wont drink anything. Because you cant get drunk in vanilla skyrim I pretend that she has enchanted the tankard so she can drink alchohol without getting drunk.
I keep atleast 1 book for when my character needs to have a little break.
I keep the Bond of matrimony at all times. though my character only wears in when she is near her spouse.
I keep an iron dagger for skinning animals. I equip it in my characters left hand then hit the dead animal and loot it at the same time.
I keep a grand soul gem because my character does a bit of necromancy and she keeps it for luck.
I keep an amulet of Azura (Gold Neclace with Magic resist enchantment. just like the shrine in raven rock temple)
and a horker tusk...