I use some small twist top bottles similar to what wife's hair color comes in. Some have pressure fit tops like the old picnic ketchup bottles, some have twist open/close spouts on 'em which work great for applying just a drop or 2 of solvent on a patch. I prefer the twist lock type tops, and keep 'em stored in an old coffee tub with a lid on. I use this type of bottle for a "range kit" cleaning kit, just use a smaller coffee tub to hold the bottles upright in a bag that holds all my other cleaning solvents/patches.