Elfin

The tinkles of sleigh bells among the snowy hills came like elfin chimes through the frosty air.

Source: tatoeba (5831708)

Tuppence had no claim to beauty, but there was character and charm in the elfin lines of her little face.

Source: tatoeba (8895452)

Behind him on the plain he could hear the eternally young people playing about their little blue lake, flitting like gay shadows through the tamarisks and calling to each other in clear elfin voices while they frolicked after the fluttering swarms of great, bright-hued moths.

Source: tatoeba (12173987)

It was quite an expedition that Ida met, a kind of elfin's rout it looked in the moonlight, children and animals and a fairy-like presence with a face like a moon-lily, all scampering and squealing and whoofing and miauling in a merry game they were making of their progress.

Source: wiktionary