This was exactly what we did and I've spent quite a bit of time on the sofa under a quilt watching rubbish telly or reading.
I've done some knitting. Mostly working on a scarf in the alpaca wool I bought back in the summer. It's quite a slow knit because it's k1, p1 rib and needs close attention to the chart for the placing of the double cable twists, but I'm enjoying the results.
Also did a very rapid knit project to make myself some wrist warmers. Quite a few of my cardigans have three-quarter length sleeves or open bell-ended sleeves and I've found a chilly gap between glove and sleeve-end even under a winter coat. So, in preparation for our new year's day walk, I made these. I had 72g of yarn, so had to keep weighing as I went along so that I didn't use too much up on the first wrist. Worked well and did the job.
My other creative activity was also in the interest of keeping warm - a draught excluder for the front door made out of an old jeans' leg and stuffed with old socks and tights. It still needs a bit more stuffing before I close off the end, but is already in service. This had the added benefit of forcing me to sort out my socks and tights drawer.
Also had the opportunity to sort out all my knitting needles into the pockets on the gorgeous bag Ruth has made for me.
Then there was the Christmas jigsaw - a fiendish optical illusion from my sister. I mostly did the straight edges and Steve filled in the middle! I was a bit bothered by the fact that the illustration of the puzzle is circular and the puzzle itself is square - an illusion indeed!