Not winter list but 'general purpose' one for a few nights out that might be useful as a basis for someone;
SADDLE PACK (from Pavel)
Shelter:
Tarp (MYOG window film) with throwline guys
Ground sheet (MYOG window film)
Pegs (Alpkit Ti)
Split ally pole
Clothing: (to suppliment worn bike kit in cold or - more often- sleeping in)
Merino top
Merino leggings
1 x socks (synthetic fiber - warmer than merino surprisingly )
Down jacket with hood (Uniclo) (boost sleeping bag if it chills below 0deg)
Thin running gloves
Merino beanie
Tea:
Ti (Alpkit) Mug with teabags and fudge (fudge = sugar & milk in one easy to dissolve cube)
Solid fuel tabs and Ti stand with ally foil windshield in mug
Ti spork (Alpkit)
Lighter & waterproof matches
1st aid;
Foil space blanket
Inhaler
Spare plastic pince nez
Paracetamol tabs
Ibuprofen gel
Plaster strip
Steri wipes
antihistamine tabs
BARBAG #1 (Alpkit 20L in MYOG sling)
Sleeping bag (PD 600 spring/autumn. Lifeventure 'light' summer)
Bivy bag (Alpkit Hunka)
Mattress ( Hymat SL)
BARBAG #2 (MYOG 1L nylon)
Down gilet (Uniclo)
Armwarmers
Legwarmers
Merino buff
Petzl-type head torch
MINI CROSSBAR BAG (£5.00 off ebay type)
Garmin batteries (2 x AA)
Gaffer tape
Chain lube
Chain links
Wheelspanner (Alfine nuts)
Vinyl gloves
Zipties
Brake pads (1 set of)
Tyre patches & boot
Tube
Multitool
Headlight & 2 batteries
Water purifying tablets
Phone
Framebag ( (Buggybags) - if needed to carry;
Food/water