By Harriet Morphy-Morris Rising household bills and energy prices may feel all the more prevalent as the current cold snap hits the UK, with some parts facing snow and freezing conditions it can be tricky not to ramp the heating up. Our latest money-saving pick is a £20 thermal set from Amazon and using it to layer up at home may just stop you from reaching for the thermostat. It’s the second part of our newmoney-saving picks series where we round up the latest gadgets and cosy comfies to help you either stay warm or cut the costs around the house. Last week it was Ninja’s £70 off sale on its …