I have a fun messy technique for you. There is a video tutorial below, and also a print copy of the directions: https://app.box.com/s/t45oy6vokyh7xng5esvcedqm47da0thx
I store my embossing powders in Sistema Plastic containers
https://www.amazon.com/Sistema-41524-Collection-Storage-containers/dp/B071JMJMHL/ref=sr_1_5?keywords=sistema+containers&sr=8-5
Here are the clips I use to hold the tiny spoon in my embossing containers.