If you have an extra humidor, soak your humidifier in your liquid of choice.  Otherwise, make your own humidor with a tupperware container and the corner of a small sponge soaked in liquor.  Make sure the sponge doesn't directly touch the cigars and keep an eye on them, so they don't get too humid/moist.  You may have to trim the sponge accordingly.  I'd keep the cigars in there as long as possible (at least a month or two), refilling the sponge if it dries.  The longer you keep the cigars in there, the stronger the taste of the liquor they will have.  Good luck!