Bookstack is really nice and user friendly. It's probably one of my favorites.
Dokuwiki is simple and stores files in plaintext.
I haven't used wiki.js much but I've heard good things about it too.
Another option if you don't need to share the wiki with anyone would be a note tool like Trilium. It has built in support for stuff like mermaid or excalidraw diagrams.
Don't forget to setup backups for whatever wiki you do go with, and make sure you can restore them when your wiki is broken ;)
Self cleaning? Is it something you made or what's the name is it? I'd be interested in details either way
I really want a fancier water fountain for my cats but never found a self cleaning one :(