
The USB-powered breast warming "Bust Beauty Pad" from the creative folks at Thanko may be the answer to your problems. Fortunately, they also sell USB fans, which you may want to have on hand in case you overheat.
Credit to Lisa at the Tokyo Mango blog for spotting this.
P.S. Takechanpoo's girlfriend seems to have entered the modeling business, as you can see from the photo!