In my Japanese house in the countryside, I don't have central heating. Just peripheral heating. In an era where just a simple word like "change" can get a president elected, I suggest that the next person running for prime minister in Japan use the slogan "central heat!"
The other day in the hardware store, I noticed a huge display of peripheral heating products to keep you warm. There are electric sofa blankets to place over the bottom cushions of your sofa, plug-in foot pockets for your feet, and electric zabuton pillows to sit on. The list goes on.
It's not a matter of which to buy, of course, but how many. These products are conveniently located next to the extension cords and multi-socket adapters, which are located next to the nabe pots.