'Baba Yaga's Hut' in glTF format, downloaded from https://sketchfab.com/models/479b5f3c493349b18c59dbcbe354d98f?utm_campaign=479b5f3c493349b18c59dbcbe354d98f&utm_medium=embed&utm_source=oembed#
Created by https://sketchfab.com/Inuciian Usage for teaching A-Frame
'Duck' in gltf format, downloaded from https://poly.google.com/view/1cAO2jZEz1L Created by Robert Mark Usage for teaching A-Frame
'Duck' Tracking Image, downloaded from https://pixabay.com/photos/duck-meet-ducks-rubber-ducks-4127713/ Created by Manfred Richter Usage for teaching A-Frame