The pets are enjoying the blanket fort.
That’s not levels of cozyness, those are levels of heating lackness.
5 and 6 are straight up hijabis. Also have you considered: https://en.wikipedia.org/wiki/Kotatsu?
Kotatsu - Wikipedia

Replace the tea with beer and book with porn and it sounds about right.
I’ll take 4 but with the fluffy friends.
It annoys me that there is a 2 item jump from lvl 1-2 and nowhere else.

7 images would have lacked symmetry, and skipping over the “another blanket” would have blunted the joke by reducing the ridiculousness.

Choices clearly has to be made.

I would simply have skipped the candle as it was the least essential to the joke

Maybe. I think it adds some balance to the image, so maybe you skip the tea instead. But then, no tea.

A hard road to travel.

Should have started the image with the candle perhaps.