I have used the pill bottles that you get when filling a prescription. I mark the bottle outside with a sharpie figuring the desired amount of e-tex and hardener on the outside. I find that using my measurements I can coat as few or as many plugs that I desire. I coated 6 jointed plugs today and used a measurement of 5/8" for each part. It was dead on and nothing was wasted. Pour the epoxy first and then the hardener. You can see through the bottles and bring the level to your line with very accurate results.
For those who never fill a prescription -- Congrat's! -- the pharmacy will probably give you a couple just for the asking.
