A Cuisinart four-cup blender doing its thing.
Penny likes to make frozen banana concoctions that come away with the consistency of ice cream. The sounds of the blender change with the forward and reverse of the blade, which are marked "chop" and "grind" on the control buttons; how the machine runs indicates the consistency of the mix. There's also a quiet little moment at the very end (2:40) that makes me smile every time I listen to it.
I've wanted to record this process for quite some time, and I've come away with more ideas now that I've finally done it. The kitchen is a very interesting room.