I occasionally write a blog about the things I've learned, things I've enjoyed, or topics that I wish I had found when I first started as a software engineer. You can read them here:

I build very small side projects, usually to learn something new, for fun, or because it's something I need in my life but can't find elsewhere.

There are soooo many things I enjoy or want to learn more about, so I have to pace myself and focus on one thing at a time. For example, I once wanted to learn how to create my own NFT contracts. Currently, I'm focused on front-end development (outside of work, as at work I focus on both front-end and back-end) and in particular, creating coolprettycute design stuff with code.