I think it is alps - ^^^^ is a diagrammatic description.
Also https://en.wikipedia.org/wiki/Alp_%28folklore%29
//They also enjoy tangling hair into "elfknots" or chewing and twisting horse's tails.//
Yes Fiction-factory, I looked at that sigh, but I had the P from the clue
16d Might such writing skill exclude Austen, Bronte, Christie et al (10)
~ I have penMANship (penmanship)