Joe Frex Knockbox

For the used bean. Impact-resistant plastic with solid stick covered with soft silicone.

It is large enough so that the coffee does not smoke next to it, but also small enough so that it can stand on the drip tray of the espresso machine when the espresso is not brewing.
All in all, a really good size that does not dominate the interior of the kitchen and at the same time fits well with most espresso machines.

11 cm in diameter.
10 cm high.
The stick can be removed for easy cleaning.