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.