I just realized I'm a picky eater
One suggestion the nut had at the meeting was to add any sugar-free flavoring you can stand. I got some extracts in the cooking aisle but I also picked up a couple sugar free syrups for coffee. And I got a great decaf coffee to brew that I can add powdered milk and/or the protein powder. Maybe those could/help. I've also heard of people making weak sugar free jello and blending it with ice for fruit slushie type drink.