Mythos One grinds catcher

Does anyone know where I can get one of those things that retrofits over the base of the Mythos, that sort of catches all the grinds, so you can pull it out and bin them without having to sweep and wipe all the time.

I don’t even know what they are called, or who make them, but I’ve seen them in some imagery somewhere and they look super useful and fuss free. A sort of drip tray of sorts, but for stray grounds.