While it is maintained by Atlassian, I found this react library really useful for making customized Trello boards for myself https://github.com/atlassian/react-beautiful-dnd

Creating cards that made sense for my use case was fun... I was going to play with adding a card type that I could work on to create notes with my apple pencil, a bit like postit notes... Anyway, a silly side project for me I guess, but worth a look if you're heavily invested in Kanban format