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.