Decorating festive biscuits is the perfect way to while away a wintry afternoon and there are plenty of kits if you need a little inspiration. We’ve picked our favourites on sale this Christmas, from classics like Hansel and Gretel gingerbread houses to those with a twist, such as a 3D green tea cacti kit. Bring on the rainy afternoons – we need an excuse to stay indoors and get stuck into this lot.