The Humble Potato for Humidification.

[vortex]

Used women's underwear work well, too! Imparts a slight, but not unpleasant odor, though.

 

[JHolmes763]

Used women's underwear work well, too! Imparts a slight, but not unpleasant odor, though.

 
Hmmm... there's a joke about your mom and panty sizes for a walkin humidor somewhere in there, but I'm not going to make it.

 

[Bayamos]

I am fortunate to have access to Ultrapure Water. This and 65% beads works just fine.
 
Using potatoes in a humidor with "high end" cigars or just cigars, is a no-no.
 
Unless, your smoking a stick with a Witch Doctor in his hut, I mean, house.