Do you know about Ted Martens' Pixel Fireplace ?
This meme of an own fireplace is getting really inspiring, it somehow reminds me Handersen's tale Den Lille Pige med Svovlstikkerne
These comforting testimonials should be curated :
i think about Ludonaut's campfire too
they can serve interaction as universal symbols, as does Little Inferno, Dark Souls bonfire, many many more that i can't think of..
hope i read your book soon !