I have a zippo, I like that it’s easy to pour in liquid fuel and they are somewhat wind resistant but the fuel does evaporate away over time. I keep it in a plastic bag which does slow the rate of fuel evaporation though.

Not sure what cheaper fuels could work well in it, that would reduce the cost of fuel that just evaporates then and I don’t use it that often so I suspect more is lost to evaporation than usage.