Storing/dispensing powder

So far I've kept my (powder coating) powder in the baggie it came in. I spoon out what I need.
Been thinking of putting it in a plastic water bottle. The thin, clear, throw away bottles.
That way I could just pour out what little I need into the butter dish instead of messing with a spoon.

What do you all use?

I use ziploc bag. I like the water bottle idea. It’d be much easier to dispense.

That's what I was thinking. A Mountain Dew bottle would be stronger. It was such a simple idea I thought maybe people didn't do it because of static or something.