I apologize in advance if this has already been posted.
Although I have a TON of glass & plastic bottles for juice storage (over 100+), I am still running low. I am only making 10ml of flavors, but most have to steep. I am probably overdoing it, but I have only made 1 recipe that has turned out to be an ADV.
Instead of washing out all those glass bottles/droppers, I have found a cheap & "disposable way" to test flavors. Glass test tubes off of Amazon. I paid like $8 for 50 glass ones. I figured this would allow me to have more flavors steeping, that I can test out. Whenever I find a flavor that I like, I can pour it in a glass bottle, keep the recipe & make more to steep. If I don't like it, I can rinse it out & recycle.
Actually the ones I got are flat. I find them easier to mix the juices. They don't leak. They also stay pretty steady while filling. These are only 15ml, so they would only work for mixing small amounts. They also have trays to hold them, but I've just been putting my mixed ones in cups/pencil holders.