@hund cool website, here is what i found:

https://yushakobo.jp/shop/ergo42-towel/

this is almost exactly what i want. i would prefer two 8·4 keypads, instead of 4·7 tho.

here's the bigger idea: https://github.com/opensofias/braindump/blob/master/project_definitions.md#universal-keyboard

also one of my use case would be as #16EDO musical #keyboard 🤓.

#universalKeyboard