I want to make DIY liquid but don't want to buy specific "ecig/ehookah" flavors. I want to know what can I use to flavor my eliquid. Can I use stuff like flavor extracts? Flavored oils? Things like vanilla extract? or instead of mixing water into my glycerin could I mix in fruit juice? What works? What doesn't what can I buy at like a supermarket or health food store that will work? I'm not using nicotine so exact measurements shouldn't be a problem.