@Diamond Porter
If you couldn't afford lamps or candles, the only indoor light would come from the fire.
Indeed. There's a Latvian peasant late night handiwork lighting method that sounds almost insane by today's standards. It was... (I obviously don't have language to speak about it in English, so stick with me) ...prepared quite thin very long slices of wood, typically pine wood, ideally from wind falls as those are naturally shattering along the year rings. So, half an inch to an inch wide, one year growth thickness, two and a half to three, perhaps up to four feet long wooden slices of soft wood (called skali), those were serially burned sticking them into a special stand at an angle (the low end is burning, the top end is in hold). They had to be changed every few minutes. A task commonly entrusted to a rather young child, elementary school age at most. Older children did more productive tasks.
Yet, that was how light was provided to multiple people working in a common room (including but not limited to spinning, knitting, sewing, practically all clothing was made in-house from the seed up) through the long hours of winter nights (solar day around Christmas time is only 6 hours here).
The practice was allegedly still present in nineteen century, albeit dropping out of favor for obvious safety reasons. Yet, candles was something the peasant homestead had to import, unless they ran a sufficiently large apiary, and even then, pure beeswax candles may smell good, but aren't the most practical. The hardship driven pursuit and later romantizised ideal was to only import salt and metal to one's homestead, with everything else regarded as luxury goods for bragging rights that can and must be substituted by own product in everyday use.