Living with Sherlock made you aware of his habits. The morbid habit of leaving body parts about the flat, (the kitchen usually suffered this). A severed head was marginally harder to ignore than the skull.
There was his habit of relaxing with his violin, (with only the occasional piece termed, relaxing).
Earplugs were a good investment.
His 'three-patch' problems necessitated an extra trip or two to the corner store, but were preferable to smoking.
His habit of lying indolently upon the couch for hours? That was the most benign of his routines, and easily ignored.
With these habits, one wonders what else would rate a mention, but one could not live with Sherlock and not mention his cell phone habits.
It was nothing so simple as 'text speak', or even the abrupt endings to calls, it was that the detective couldn't keep track of the phone itself, (necessitating the appropriation of John's own phone).
Its owner lost in thought, the phone would be deposited in the oddest of places.
The fridge was a frequent resting place, and under the skull a close second (if one was looking).
On one memorable occasion, it had been fished out of the toaster before breakfast.
It was perhaps the most exasperating of his odd habits, even if in comparison to the others it seemed benign.