Buying cakes for your wife isn't the only way to return her kindness. For example, you could spoil her. Not that I'm expecting you to do it, so...
Simply help her wtf??? She's doing all the housework now, you should simply help her with some. Maybe you do the sweeping the floor, maybe you try cooking, maybe you do the laundry, wash the dishes, or anything! Is it that hard to think of?!