The Decimal Workbook

I guess Disney would sue if you used Huey, and Louie, Dewey being taken.

There's also the 'dundridge digit' system, if you know your modern english comedic literature. He invents that one in prison so maybe not a good hook.

Systematising is good. It's also hard. There's always something which fails to fit the category. Jorge Luis Borges and Umberto Eco have some things to say about that.