Leave A Funnel In Your Car.
Bottled water and juices can be found everywhere. Heck u can refill an empty bottle in a sink.
But try putting your powdered supplement of choice into that narrow aperture and see how much spillage you get.
I tried a piece of paper and it was the textbook definition of mediocrity.
Long story short Tony got smart and put a funnel in his car. Specifically one with a very narrow aperture itself.
Now I can mix on the go and it saves me time and mess.
Doesn’t get much better folks.