I love building things. Here are some of my projects. Some are open source, you can find the code on GitHub. I clarify some of my design decisions in the the post for each project which might be interesting to read.
Create easy clamping for margins, paddings and typography with CSS & Tailwind output
Strict ESLint config for Next.js with Typescript maintained and used by Pixel Perfect Agency
Test your keyboard and mouse inputs
A very solid architecture for scalable Next.js projects.