for me its Nite Lite. i gotta have Bounty Hunter, Gold, Tappules, and Line Rider all on hand, at all times. Renegade and Harbor Nite are the other NLV liquids i keep on hand as well. very highly recommended.
other than those, i gotta have a citrus on hand. lately ive been DIYing One On One's Rainbow Sherbet. so good. but others that satisfy my citrus urge are MBVs Raspberry Lemonade, Jiucy Vpaor's Ecto Plasma, and various Mtn Dews (for example OKC Vapes' Rocky Dew - its a great Dew imo as well as The Vapor Room's Mt Do).