Lovely thread. It's inspired me to have a rootle through my collection to see if there's anything that might inspire you, OP. Not all available at JL I'm afraid but well worth seeking out.
I've had a big old squirt of L'heure bleue and agree it might well meet your requirements - powdery, warming, comforting. I feel as if nothing bad could ever happen when wearing it.
other suggestions include:
Guerlain Shalimar, or maybe Mitsouko - both proper grown-up fragrances fit for Women In Control Of Their Lives, a bit glam but also warm, deep and nuzzly.
Serge Lutens La Fille de Berlin (warm yet bright rose), 5 o'clock au gingembre (cozy, spicy, soft, ginger, like biscuits baking) or Chergui (sweet amber)
Clinique Aromatics in White (a musky rose with amber)
Houbigant Quelques Fleures (some will say this is 'old lady perfume' but imo old ladies know where it's at with grown-up, classy green florals, do not underestimate them!)
Diptyque 34 boulevard St Germain - this is my current go-to if I know I've got a tough day at work ahead! Spicy but not fierce, just incredibly chic but also comforting.
4160 Tuesdays Creamy Vanilla Crumble - as the name suggests this is incredibly comforting and cosy, heavy on the vanilla but not overly sweet due to a tobacco note that gives it a lovely deep smokiness. This is basically made for sticking your head down your jumper and sniffing!
If you are anywhere near London I would second the suggestion of taking a trip to Les Senteurs, or alternatively Bloom in Covent Garden is gorgeous and they will let you have samples of anything in the shop for a nominal fee. It's also close to Diptyque / Penhaligons / Miller Harris / Chanel so, go crazy!