These are mineral absorption pads and replacement ultraviolet bulbs for this humidifier:

This humidifier was by far the best I have ever owned. At one time we owned 2 (Anabelle eventually got her own).  We used them until they had nothing left to give, and then we dropped them off at the Beacon electronics recycling day. 
I found these replacement parts, but they are no good without the humidifier.  So adios.