function

So, I searched a bit, and I apologize if I missed it, but I don't see any function video threads. So... here it is! Show off function videos of your glass! I'll start, with a dry function video I just shot with my Skyglass Galaxy rig, using an Herborizer. :) :peace::leaf::peace:

When you or somebody else would build an ideal e-nail for you which components and functions should it have?