The Asperger is associated with the element of water and is used to sprinkle saltwater for purposes of purification. There are actually many things that can be used for this purpose apart from store-bought Aspergers. Feathers of all sizes work pretty well, as do brushes or paintbrushes.

If you can find a Catholic supply company you can get one from there as Catholic priests use them for asperging (sprinkling) holy water. You may find them listed as Aspergilliums which originates from the Latin name.