Vanilla Chai Spice Liquid Coffee Creamer

I’m looking to make my own version of Coffeemate’s Vanilla Chai Spice Coffee Creamer, preferably liquid. I actually want to make a sugar-free version, as they don’t have one, and sugar-free offerings in the coffee creamer area, whether liquid or powder, are extremely limited. I was thinking of using Truvia or Splenda (or their lower-cost alternatives) for the sweetener. I can’t figure out the spices, or the quantities. Thank you.