Back to the old Graphics Group at Lucasfilm? I'm guessing not that old because back then they weren't really making demo films. The early Pixar shorts were really just demos for their hardware/software systems. Heck - I remember when Pixar shorts used to have little Easter eggs about their location in Point Richmond, California before they moved to Emeryville.
I saw all the SparkShorts films from Pixar were available.
And yes I'd like to see Feast on my new TV although I do have a copy of Big Hero 6. But what I'd really like to see is Paperman on bigger screen. I might be able to use Apple AirPlay, but directly from
Disney+ would be better.