I added back the posting activity visualization that was on my site a while ago. Now it's on the homepage under my bio instead of at the bottom of each post. There's four shades of blue based on relative number of posts. Hovering on a square shows the date and number of posts.

screenshot of the bio on my homepage with the posting activity visualization underneath it: 30 small boxes with colors from gray to deep blue indicating relative number of posts each day

Next I would like to set up daily archive pages that each box can link to.