@Dr. Seuss p One Stop DIY Shop also has "One Stop Blends", besides the One Stop Flavors already linked to in another post. I've linked below to the Blends, also in the 10mL sample size. However, they have all of them in larger sizes, too.
I've tried 16 of their One Stop Flavors and One Stop Blends so far, and have 4-5 others I haven't made yet. My definite, regularly used favorites
so far have been: Lucky Shot, Lotta Latte, Baked Cinnamon Roll, Old Tyme Root Beer, and Licorice Torpedoes. I also use a combination of the Lucky Shot + Lotta Latte...that results in what I call Caramel Latte. It's also liked by several local friends. Some people on ECF call their combo Lucky Latte or other names, but it's the same mixture.
10 ml (Sample Size) - One Stop Blends
OSDIY has a couple on-going coupon codes for 12% off your total order. You can use either 1 for the discount: ECF or JFK. They also run sales with even larger discounts frequently during the year (mainly around holidays).