I’m keen to help people to give up smoking (rather than forcing them to do so).
Today’s invention on this theme is a set of covers for cigarettes. A loved-one of someone trying to give up would buy a pack of 20 lottery scratch card cigarette covers.
They would then glue these around the outsides of some cigarettes (increasing the number covered per pack as time went on).
The smoker would have to choose whether to play the lottery or smoke a cigarette, each time, since removing the scratchcard would destroy any chance of smoking that particular one (and trying to scratch in situ would have the same effect).