Snowfall
Lovely snow for your website. See a demo at https://snowfall.ooer.com/
Installation
Download /dist/snowfall.js and include it in your website somewhere. Then make anything that you want snow to settle on with a .rooftop class.
Alternatively clone the repo and use npm run start to run a webpack dev server instance on port 3000. This will watch for changes to the files in /src so you can tinker with it.
Improvements
The snow isn't clever. It just lies on to of the element's clientRect. Ideally it should lie on the actual content, text, or whatever.