I get addicted to the feel of some objects.
For a while I used to carry in my pockets a variety of tactile stimuli...
favourites were a whole macadamia nut and a 20 sided dice... they lasted for years..
I particularly like the way they roll off the car when the police get you to turn out your pockets.
For some reason... they always have to pick it up and put it back on the hood... from where it promptly rolls off again.
It's like forcing OCD on authority