Источники звуков чайной системы (CC0 / Public Domain):
kettle.whistle: D.D.Teoli Jr., Public Domain Mark 1.0, archive.org/details/whistling-tea-kettle-sound-d.-d.-teoli-jr.
kettle.boil: sp9-9691, Public Domain Mark 1.0, archive.org/details/boiling_water
kettle.ready: OpenGameArt, CC0 1.0, opengameart.org/content/pleasing-bell-sound-effect
kettle.water: Ihaksi, CC0 1.0, freesound.org/people/Ihaksi/sounds/591662/
vessel.pour_start: MasterSuite, CC0 1.0, freesound.org/people/MasterSuite/sounds/667401/
vessel.pour_finish: Mafon2, CC0 1.0, freesound.org/people/Mafon2/sounds/330025/
vessel.sip: BOAAY, CC0 1.0, freesound.org/people/BOAAY/sounds/552676/
vessel.drink: boyscontentclub, CC0 1.0, freesound.org/people/boyscontentclub/sounds/521585/
vessel.pickup: Caitlin_100, CC0 1.0, freesound.org/people/Caitlin_100/sounds/365519/
teapot.fill_start: naxxfish, CC0 1.0, freesound.org/people/naxxfish/sounds/121211/
teapot.fill_finish: FishPlinko, CC0 1.0, freesound.org/people/FishPlinko/sounds/756421/