Too Many Choices?

It's officially autumn and aside from repelling a soaking wet cat, who is determined that the best place to dry off is my lap, my major concern while working is how to stay warm. The simple answer is of course to put on more layers and this means knitwear. The problem I have is that my wardrobe is slightly light in that department since it is largely made up with suits from my days bellowing at teenagers. Furthermore, my favourite jumper has recently disintegrated from wear. 

 The unravelling neckband is the least of my worries with this jumper

The unravelling neckband is the least of my worries with this jumper

So here's the big question: What should my priority be to stay warm in the office? Do I cast on for a new jumper, bearing in mind that I already have two unfinished baby cardigans sitting in project bags? Do I return to socks (look back a few posts to see my first effort)? Do I cast on Woolly Wormhead's MKAL hat for this year that I've been donated on the understanding that it is good for me? Or is there something else I should make?

Please help!

VT