I've been dicking around with an idea for a while. I've always found it a bit weird that the cabins are completely lit even at night. So:
1. Windowed houses
I think new players might find glassmaking a tad difficult so I'd suggest that you could either add windows to a house, or build windowed-cabins etc. This would allow the cabin to be lit during daytime without having to light up a fireplace. Also if the house had a lit fireplace it's light could shine out the window during the night.
2. Fireplaces
A stone or a more efficient brick fireplace. Would light the cabin and perhaps allow the roasting of meat inside a house. I think someone already suggested this and pointed out that cabins should, of course, get chimneys after a fireplace is added.
3. A wood-burning stove
A metal-stove. Would light the house, burn more efficiently (burns longer with less wood) and allow the roasting of meat and perhaps after you craft a pot, it would also work as a cauldron.
Perhaps as an added bonus, a status effect called "warmth" or "comfort" or something gay like that would come in effect when you're in a house with a roaring fire. It would simply speed up the recovery of stamina a bit and why not also double the healing rate of bandages.