I run untested, viewer-submitted code on my 500-LED christmas tree.

Original video: https://www.youtube.com/watch?v=TvlpIojusBE I think that went well! Head over to github to see some of the code involved. https://github.com/standupmaths/xmastree2020 The behind-the-scenes videos are on Patreon: https://www.patreon.com/posts/behind-tree-45862331 Yes, this is my second channel. You can see the main channel over here: https://www.youtube.com/standupmaths