No, it’s not Friday. Even though over Christmas I completely lose track of the days and have no idea where I am in the week. I’m just catching up on the inspiration posts for the UK Swap. 
What is your favourite way of keeping your feet warm?
Handknitted socks! Though sometimes even they can’t keep my feet wam enough. I should make some alpaca bedsocks like the ones I made for my grandma:
Do you have a favourite pair of socks you reach for to keep your toes toasty?
Usually whichever ones are clean. 
All of them are lovely to wear.
Is there a pair of socks/slippers you have been wanting to make for ages but haven’t got around to?
Probably too many to mention! Looking through my Ravelry queue, I have the Norwegian Stockings and Laila’s Socks (both by Nancy Bush) lined up, so I think I have a hankering for colourwork socks at the moment.
What is your favourite finished object that warms your feet?
I rarely knit socks for myself. Of the few that I do have, I guess my current favourites are the Clover socks:
The yarn I used, Shelridge Farm Soft Touch Ultra Solid Colors, is divine. 
What is your favourite yarn to use for socks/slippers
It’s boring, but I love Trekking XXL and Opal. I do like the ability to handwash socks wherever possible, but I am a complete sucker for any squishy yarn that won’t last five minutes but feels wonderful on my feet.
I only recently started knitting socks — I was always a sweater knitter, but decided to branch out and I’m glad I did! I’ve only done three pair but I love them all. And I have many, many more planned. Isn’t Nancy Bush wonderful? Cat Bordhi is a little too out there for my taste, though — or maybe I just don’t want to get that far from the box????
It’s actually kinda nice to hear that someone else has that feet-cold-despite-wool-socks problem. Maybe I’m not a freak. >_> Often on the really cold nights I’ll be wearing two pairs of socks, either both wool or one wool with store-bought cotton over it.
I love the Clover pattern! Hope you have a great New Year!