Pretty much just black coffee or unsweetened tea.

not suuper healthy, but i do a blueberry/blackberry frappucino with almondmilk with a banana blended in, no base!

I love the rev up tea, iced green tea unsweetened, or simply a tall glass of milk

cup of ice

Depends on what kind of drink you’re looking for - brewed coffee and tea are going to be the healthiest, or black iced coffee and unsweetened iced teas. If you prefer lattes, use nonfat or alternative milk (I like almond, because the soy is sweetened and I’m just not a fan of the coconut milk) and use less pumps of syrup. Or just cut out the syrup altogether and use alternative sweeteners. Spices can also really elevate your drink while not adding a load of calories and sugar - add cinnamon or nutmeg if you want a little kick.
One of my favorite drinks is iced peach tranquility tea, topped with a little peach cold foam made out of peach infusion and cloud powder. I’m sure there is some sugar in the infusion (although I can’t find any nutritional information on it grr), but it is just enough sweetness for me. If I need something with caffeine, I switch out the tea for green or passion tea.

Nitro cold brew, americano and medicine balls.