I do not know if anyone has thought this up yet or not, but I found a great, quick, and mess-free way to fill lip balm tubes. A dosing syringe! Each tube holds just a touch more than 1 tsp. It was soo easy and I did not wind up spilling a bunch of lip balm all over the place. Bonus is that the syringe comes apart so it is easy to clean out for re-use.