I have a vague memory of being able to buy those from a vending machine outside one local sweetshop, along with the usual chewing gum.
Memories...
Yes, we had something similar. It was a brown and cream metal "cube" roughly, with the heater "element" behind a wire guard inset in the cube. We used to have "Aladdin Pink Paraffin" delivered.Yes, we had one of those (really), one with a hemispherical flame holder on top (inside), if I recall. They seemed to give out a reasonable amount of heat (if I remember correctly) and were quite cheap to run.What about paraffin heaters............coal in the lounge fire, paraffin heater in the kitchen with the washing hanging from the ceiling above on 'pulleys'............Boom boom boom boom Esso Blue!!!