‘zwammen’, in Dutch, both refers to fungi and talking nonsense. The zwambank facilitates both, as it recycles used coffee grains into an edible place to chat in shady places.
A ‘bank’ can refer to a bench or a couch, but – like in English- also to a financial institution that is meant to accumulate wealth. Whereas you may wonder if traditional banks really do so, the zwambank will, as it turns ‘rubbish’ into valuable oyster mushrooms, and individuals into social beings.