Super easy to make too! Here is what I used:
Then I painted a thin layer of glossy Mod Podge onto some old candle jars I had cleaned out. I rolled them on the plate covered in a thick layer of the food dyed Epsom Salt (the crystal kind not the flake kind.) Let them dry for a day.
The next day I sprayed a layer of Satin clear coat over them to help hold the salt in place. Thats it!