What about looking El Teide from an hidden point of view waiting for the sunset ? Here it is.
We’ll go on Teide, we’ll some some great unique place around it and, when sunset comes, we’ll go to my hidden place to take incredible pictures of El Teide, La Gomera and El Hierro with a sea of clouds on the right (usually).
Coming back we will have one stop more to take night pictures of Roque Garcia and the vulcan. Stars everywhere (usually of course).
Necessary: trekking or sport shoes. Warm jacket. Tripod (I have two more if needed). Water.