I Wish Someone Would Invent: The Coffee Roomba

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The Coffee Roomba

Reader David Bernardy from Chapel Hill writes:

I like coffee in bed a lot, but not as much as my wife.
The PROBLEM--whose gonna get out of bed to get it.
I think you know the answer to this. Why would I want to invent such a thing if I had a coffee-bearing spouse?
So, the INVENTION, which would allow us both to be happily bedded and caffeinated, goes like this.
Combine the moving-about qualities of a Roomba, with the Timed-Ahead qualiteis of your average automated coffee pot. At a preset time, it could roll into your room, announce itself in a whistle or two, and then shoosh out a couple lattes, or green tea, if that's your preference, or even cocoa. I can imagine add-ons/upgrades that would allow for a bagel toaster and a cream-cheese drawer, but let's not get ahead of ourselves.
COULD THEY DO IT?
Hell, yes. They already have stuff like this: lil' droid butlers that scurry around with cocktail trays on their heads. All I want is one to come to my bed, in the morning, with the hot beverage of my choice, and sing sweet-morning lullabyes to me. Is that too much to ask?

Thanks, David!