Sci-fi Radio (ep25) The Twonky' by Lewis Padgett

A robotic device from the future, constructed to look like a 1940's radio cabinet.
The radio's back was toward him. Several limber tentacles were manipulating the dishes, expertly sousing them in hot, soapy water, scrubbing them with the little mop, dipping them into the rinse water, and then stacking them neatly in the metal rack. Those whip-lashes were the only sign of unusual activity...
He sidled around till he could examine the radio more closely. The tentacles emerged from a slot under one of the dials. The electric cord was dangling. No juice, then. But what— Kerry stepped back and fumbled out a cigarette. Instantly the radio turned, took a match from its container on the stove, and walked forward. Kerry blinked, studying the legs. They couldn’t be wood. They were bending as the . . . the thing moved, elastic as rubber. The radio had a peculiar sidling motion unlike anything else on earth.
It lit Kerry’s cigarette and went back to the sink, where it resumed the dishwashing...
"The old one was complicated enough," Martha said, in a baffled manner. "Gadgets. They confuse me. I was brought up on an Edison. You wound it up with a crank, and strange noises came out of a horn. That I could understand. But now—you push a button, and extraordinary things happen. Electric eyes, tone selections, records that get played on both sides, to the accompaniment of weird groanings and clickings from inside the console—probably you understand those things. I don’t even want to. Whenever I play a Crosby record in a superdooper like that, Bing seems embarrassed."