Orange juice might as well be candy, a bit more sunshine in a glass than I want first thing in the morning.
Raspberry or Blackberry teas were good, but kinda subtle. Apple cider is good too, though I would also put “apple pie spice” (purchased mix of cinnamon, cloves, nutmeg) to make it dessert-y
My current preference is diet V8 Splash red berry. I like it more than the V8 tropical probably for the color as much as flavor.
One of my coworkers mixes coffee into hers and stores it overnight in the refrigerator. I can’t imagine making coffee before bed; the smell would wake me up too much.