Cigarettes
Do we really have to tell you this? They make you stink, they make you sick, and they might even make you dead. They’re expensive, too.
If you must smoke — and you really shouldn’t — then hand-roll your own. It’s hard to nail down exact savings since the cost of tobacco (and the cost of ready-mades) varies so widely. But a purveyor of rolling supplies suggests that given commercial cigarette prices of $3.50 to $14 (!) per pack, someone who smokes a pack a day would save from $686 to $4,518 per year by rolling his own.
Some guy on Reddit, who must be a veritable chimney, claimed that he saves $96 a week this way. Hope he’s putting it aside for the inevitable health problems. And speaking of health, don’t even think of buying …