Zero nic. Hm. Excuse my discourtesy and disrespect, but FIL needs to take a flying leap, just so long as MIL does not return to smoking. If Smokeless Image and the Volt had been around in my Mom's time, I know for a fact she'd have quit smoking, she would have had every green battery there was in multiples with green leds, plus the rainbow, and lots of diamond tips, and she would have had an organized drawer of prefilled cartos to choose from, and my brother would be filling cartos for her from liquids. And, my dad would have been happy to let her to satisfy those cravings she could never get over (he'd harumph a time or two, but no smoke and tar and carcinogens), just to keep her away from cancer if nothing else. Her favorite flavors and liquids would have included some kind of coffee, pomegranate, huckleberry, RY4, Ice Menthol (a lot of this), perhaps 555, and maybe a smattering of others. And, she'd be buying kits left and right for her friends and family. The novelty might have worn off at some point in the spending curve for others, but she would have been addicted to SI and the Volt, and she'd have been happy and healthy and alive.
/jumps of soapbox.