eatenmyeyes I had a vague notion of this idea(pliable tool that conforms to the task- I got tired of looking for ratchet heads) fifteen years ago but lacked the requisite scientific and engineering knowledge to make it manifest.
chumbucket a vacuum with something soft on the suction end
Robin Kestrel More like something soft that becomes very rigid when the air is evacuated. Each little particle of coffee becomes a gripping finger. Suction against the target object doesn't seem to come into play.