Bingo! Most of the tinkering is aimed at helping me make the site better. In essence, my site is a bunch of smaller projects that add up into one bigger project. If you end up doing something cool with your blog, while you're working on the true usecase (for example, my stream VOD page: https://xeiaso.net/vods) you can write about what you learned along the way (https://xeiaso.net/blog/hls-experiment and https://xeiaso.net/blog/video-compression).

Most of my site update posts are just my notes from tinkering with things turned into prose.

Mine was fueled mostly with pure hatred of wordpress