What is there to do in the garden in November or December? Plenty if the weather stays decent and you want to get a jump on next year!
Cleaning up the yard and garden is first on the list for the rest of us! Cut back your shrubs, pull annuals and any lingering weeds, and drop a layer of hay on tender strawberry and vegetable beds. Leave it through the spring - it makes a fine mulch as long as the layer isn't too thick! Protect vulnerable plants and trees from both cold winds and deer with wraps.
If your sprinklers have been off for several weeks, check on trees and shrubs for dryness. You might need to give them one last watering by hose before winter and frozen grounds set in.
Now is the time to clean off and store lawn furniture, pots and garden decor - before the first serious frost damages them. Take note of anything that needs repair or replacement before using next spring, you might get a bargain fixing or replacing it off-season.
If you planted cold weather veggies like kale, spinach or cauliflower in August, you are probably harvesting now. If you didn't - put a note on your calendar for next year! If you have easy access to your vegetable bed, adding a cold frame now will extend the growing season well into winter, particularly if we are lucky enough to have a mild one.
Lastly, take photos and measurements of beds or areas for future planting. You can spend many happy cold winter hours dreaming and planning for next year!