Half a croissant, on a plate, with a sign in front of it saying '50c'
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Hydrogen cigar lighter

Electrolyze water and light cigars with it
  [vote for,

Butane lighters change the flavor of cigars, or so the snobs say. So you should use matches. But who wants wood smoke in their cigar?? No, the premium product will light the cigar and add NO FLAVOR. Absolutely nothing will ruin the purity of your stogie with this lighter: it will be just as the maker intended.
Voice, May 13 2021

Radioisotope thermal generator https://en.wikipedi...oelectric_generator
[bs0u0155, May 14 2021]

Chlorine Trifluoride https://en.wikipedi...hlorine_trifluoride
[bs0u0155, May 14 2021]


       Surely a "car cigarette lighter" style would be best; just pure heat.
(If you're silly enough to be a smoker, that is...)
neutrinos_shadow, May 14 2021

       [+] Screw cigars... why isn't this already a lighter?   

       Seems like it should have been 1930's tech.   

       This feels like an opportunity to use some sort of fast decaying radioisotope, such as is often employed in radioisotope thermal generators, and keep a small amount in an insulated box, every now and then you can open a little hatch and light whatever you want on the glowing red plutonium <link>.
bs0u0155, May 14 2021

       Thinking further about this, it's over complex and inelegant. You're isolating H2, a reducing agent, then trying to make a lighter out of it i.e. presumably burning a steady stream of it in air (with O2 as you're oxidizer) and then using the heat from that to then initiate combustion of your cigar (reducing agent) with further O2. As 8th isn't here to suggest it, I'm going to substitute and say that if you want to ignite your reducing agent (cigar), why not do it directly with a potent oxidizer? A little puff of chlorine trifluoride (n-stoff) <link> would get a nice exothermic reaction going in no time and would provide ample heat to initiate conventional combustion.   

       Here's a description of the lovely stuff: "It is, of course, extremely toxic, but that's the least of the problem. It is hypergolic with every known fuel, and so rapidly hypergolic that no ignition delay has ever been measured. It is also hypergolic with such things as cloth, wood, and test engineers, not to mention asbestos, sand, and water —with which it reacts explosively. It can be kept in some of the ordinary structural metals—steel, copper, aluminum, etc.—because of the formation of a thin film of insoluble metal fluoride that protects the bulk of the metal, just as the invisible coat of oxide on aluminum keeps it from burning up in the atmosphere. If, however, this coat is melted or scrubbed off, and has no chance to reform, the operator is confronted with the problem of coping with a metal-fluorine fire. For dealing with this situation, I have always recommended a good pair of running shoes."
bs0u0155, May 14 2021

       Igniting it tends to ruin it anyway
pocmloc, May 15 2021

       [bs0u0155] Could there be any simpler ray/particle gun?
wjt, May 16 2021


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