something makes you happy in winter.

is Kotatsu.

In Japan,not many houses have central heating system.

I dreamed to live the house with central heating system but gave up,finally.Then decided to buy Kotatsu heating.

A Kotatsu is a low wooden table frame covered by futon or heavy blanket,upon which a table top sits.Underneath is a heat source?the electric heater attatched to the frame.)

A futon or heavy blanket is draped over the frame under the table top.

People sit in the floor or cushion called "zabuton" with their legs under the table with the futon over the lower body.

In summer,the futon may be removed and Kotatsu can be used as a regular table.

During cold winter,family members gather around this table to enjoy dinner,watching TV,play games,having conversation,any way spending time together while keeping warm their bottom half under the table.

There's high table type of Kotatsu but I prefer low type because lower is better to keep warm air.