It's still not to late to plant your spring flowering bulbs. As long as you can dig a hole, you can plant them. They should still bloom for you in the spring.
Turn over your garden soil. By doing this, it exposes any bugs/insects to the cold winter weather and kills them. It's also an excellent source of food for the birds.
Need some fresh flowers for your home? You can force bloom paperwhites, hyacinth or lily of the valley bulbs inside. If you have flowering quince or forsythia in your yard, you can cut some branches, bring them inside and place them in water. Give them a little time and you will see them bloom for you.
Keep a watch on all your houseplants for insects. Spidermites, aphids, whitefly and mealybugs can infest your plants. Take this link Houseplant Problems to find out more information on houseplant problems.
Fruit trees and deciduous trees and shrubs can be pruned now. The best time is when they are dormant. DO NOT prune any of your spring flowering trees or shrubs. They have already set their buds and you would be cutting their flowers off. Azaleas, camellias, rhododendrons, and some hydrangeas are a few you should not cut back.
Keep your bird feeders full for all of our feathered friends!