My faves are:
Balm cleansing at night. In fact my whole night routine. I'm a full-monty rigmarole girl and I love it! I find it so relaxing. No matter how drunk tired I am I always do the whole thing.
Scrunching product into my hair after washing. I hate washing my hair but I love the scrunching!
Least fave is body lotion. I don't bother most of the time and then I go on holiday where I slap on cream several times a day, and think 'oh my skin is lovely and soft, I must do this at home'...and then never do.
Also pedicure/painting toenails. Love how it looks/feels but ugh what a faff!