Advertisement: the Daytime Duvet, DTD
A Daytime Duvet is what it's meant to be, to keep you warm during the day or early evening. Thus, you can power down your heating, and save the subsequent amount of money. Landlords, restaurant owners and employers can help to make this happen.
If you need to, you can share your experiences at #DTD, #daytimeduvet, or #dagtijddeken.