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https://www.deviantart.com/search?q=xmas+mmd
For those who don't know, DeviantArt is a great source for free 3D objects, mostly you can find them to add MMD or Obj behind your search and then after download, convert them for Blender ;-)
Animaze by FaceRig
Video chat, host, and livestream as incredible 2D and 3D avatars with Animaze! Built as the successor to //the very successful// FaceRig, Animaze brings you personalized virtual avatars like never before.
Easily transform yourself at the click of a button and connect with your family, friends, followers, and fans on any platform that works with a webcam. Customize and add props to create your own unique persona. Animaze is the character creator for your online self!
Free download:https://www.animaze.us/