Calcium chloride is a salt often used as a moisture absorbent, but it makes this goo that drips water. This two part container stores the calcium chloride in the inside container and the absorbed water can drop down to vat, where it can be easily removed.
This is not ready. I was still thinking of making a lid for it, but it's under work. Made mine from ABS to extend maximum heat.
The author hasn't provided the model origin yet.