Rather than using a cardboard salt container, fill a Mason jar with salt instead. Cut off the lid of the original salt container, then screw it on top of your jar for easy dispensing. Get the tutorial at The Pistachio Project. More
How to Make Mason Jar Soap Dispensers
How to Make Mason Jar Soap Dispensers...pretty cute for a rustic look!
How to Make a Mason Jar Soap Dispenser
MASON JARS :: DIY Soap Dispenser Tutorial :: GREAT TECHNIQUE on how to fit any dispenser pump to the bottle but cutting & gluing the threaded bottle portion of the bottle to the mason jar lid. Genius!
DIY Mason Jar Dispenser
Pour it mason jar DIY :: Turn A Mason Jar Into An Easy DIY Dispenser