A lot of people (I mean not regular people, but professional front-end developers) think that animations based on particles are difficult to implement. It’s not true. Every developer with basic skills in JS+canvas can create amazing effects very easily. I wrote an article about these animations.
Simple UI framework. RSCSS, REM-based sizes, fluid typography and other nice ideas. This website is powered by it.
Unique avatars for your users. No dependencies, VanillaJS, 1.6KB gzipped.
Dark color scheme for Vim. Mostly blue and green colors.