When resting from the computer I try to get in a spot more thinking on the elementals. Here are another couple of sketches showing the fun I am having.
One cool source of all things elemental in nature is the artwork for Magic: The Gathering and the plethora of elemental cards that have been made over time. From the Thorn Elemental to the Bloodpyre Elemental there are interesting visions to behold. The card database lets us find all the elementals quickly as well.