My about pages are way less playful but store quite some information nonetheless. Right now I have them divided in "About the Page"
https://www.valycenegative.it/?Section=About%20The%20Page and "About the Author"
https://www.valycenegative.it/?Section=About%20The%20Author but in my upcoming update they will be fused into one single section.
I have added: a brief explanation of the site itself, a condensed site map (my site is actually very straightforward so my map is more of a description of what you can find in any section), a version history with screenshots of past skins/color palettes, won awards, a brief description of what I do/my artistic influences, my fanlists and my adopted web plushie-they're Dragonites. They're all just Dragonites.
Something that you could add is a list of favourites! You already have albums and movies but you could go further with fav color, food, drink, season, media characters of choice, clothing to wear, games... if you have it nowhere else on your site you can also add some Q n A explaining your indieweb manifesto and the idea behind presenting your work and yourself with such a layout. I have it in my dedicated FAQ section where there's also more disclosing about site and me (site creation history, my usual usernames, my works' origins, so on).
Also this goes beyond your question but your page titles, main logo, and menu graphics??? Omg! I love them! They're so Clayfighter like! I've never seen similar styles anywhere! How did you make them? I'm in awe! *O*