If I could figure out a way to keep the liquid all mixed up, I wouldn't mind packaging it directly into syringes for easier use.
True, there are a few other considerations to doing that, but it'd be sorta cool...
And, you'd only loose maybe .01 - .02 mL (at most). Less than a drop!
Of course, getting the proper syringes could be a bit pricey... have to use the kind with 2-part plunger assembly and some kind of tip seal so it doesn't empty the syringe during shipment.
Come to think of it... if anybody runs across a source for stuff like that, please don't hesitate to let me know...