As I write this it is currently snowing heavily and the garden is white over.
I've done a checklist of some of the things you can do to prepare for the oncoming year.
Check tools and kit required for the year ahead, including stakes, netting, compost, seeds, labels etc
Make repairs to irrigation, fencing, netting, cold frames etc
Clean and sharpen tools
Clear and tidy glasshouses, shed, cold frames
Project work requiring big changes, such as installing fencing / changing the garden layout etc
Order dahlias and chrysanthemums
Continue cutting down any perennials
Straw path laying
Plant bare-root plants
Service of mower change oil/filter/spark plug