Water pillow or Boveda humidity pack

The instructions for water pillows say to use distilled water. This will provide humidity, but not give you any type of control over the humidity level.

Instead of distilled water, use humidor solution (50/50) to charge your water pillows. You will now be creating the same humidification that they use in the Drymistat tubes, except in a different package. Your humidity should stay close to 70%.