I do love wet felting, but it's not an activity that is particularly easy to do in front of the TV, and can be a little strenuous. Needle felting is a dry activity, and on a smaller scale, so perfect for Christmas crafting.
When I'm at shows the work of Jenny Barnett always captivate me. I love the whimsical look of her creatures.
Jenny has kits available in her shop, and also has some very reasonably priced workshops in 2017. If you want something more seasonal then Adleaide Walker have reduced the price on their Snowman Needle Felting Kit.
If you just fancy having a go with the wool you have in your stash already then you just need some felting needles. They come in different sizes and formations, this site has a handy guide.
For some tutorials in making a few different things this site has some nice guides.
This post is part of my advent calendar 2016. Every day in December we're saying so long to 2016 by embracing learning, knowledge and creativity. Each day there will be a new post with a new skill or craft. You can read all the past posts here.