I have set up a corner piece of my kitchen counter as a 'coffee zone'. I have a coffee grinder, a Krupps dripper, a Nespresso and (in case of laziness) a disposable Keurig. Anyone who uses a coffee grinder knows that ground coffee dust always remains after use. I rubbed it in my hand and then I saw these little vacuum cleaners on the line. This works amazingly well and picks up the grind. And with daily use, I haven't had to change the batteries yet. Really nice little device.