Heraldic Needlepoint has a great range of Austerity Era Cushions, which take images from posters issued by various departments of the British Government during previous periods of austerity, which may be equally relevant in these times.
These do include the now (over) familiar Keep Calm and Carry On and the well known Dig for Victory, but there are also a series of designs about feeding waste to pigs and hens and several on the “Make Do and Mend” sentiment. My favourite is the one with the warning that “To Dress Extravagantly in War time is Worse than Bad Form, It is Unpatriotic”.
The cushions all cost £34.99 and are available to buy from Heraldic Needlepoint.