Ladies I am so impressed, in the last three days we have managed to double the number of posts on this thread! Go us 
Ok, so as promised, here is how to Have A Very Merry Pagan Christmas Geek-style.
Pagans celebrate eight festivals a year, arranged in what is known as 'the wheel of the year'. These fall at approximately equal intervals, about 6 weeks apart, the biggest of which is Samhain, 31st October (aka Hallowe'en to the rest of the world). Then there are just six weeks to go until Yule, which lands on 21st December.
What is Yule all about? It is no coincidence that Yule lands on the shortest day of the year. It is all about celebrating the end of winter's rule and the inevitable turning of the year towards spring. Pagan mythology tells us that this is the time of year that the Moon Goddess gives birth to the Sun God's son, who will in a few short months become the Sun God himself, impregnate her with his own son, and the cycle continues.
Celebration therefore revolves around the rebirth of light, warmth and hope.
We celebrate by decorating the house in 'natural' ways - think victoriana: pine boughs, holly sprigs, ivy trails etc. We also have a 'forest' rather than a christmas tree - three trees we have 'gained' over the years, that tend to look better together than individually. These are decorated in the normal way - tinsel, lights, baubels, but topped with a star or a moon.
Aware that we are not out of the woods yet, we make bird feeders and decorate local trees with them. We pamper our pets because we don't have any farm animals - traditionally, the animals would have been well fed at this time as even though the nights will start to get shorter, the worst of the weather is usually still ahead of us. We stock our own larders/cupboards/freezers, and bulk-make food that can be kept for when we are having lazy days, or for when certain foods are out of season. Sprouts and leeks are our favourite for this, as we enjoy eating them throughout the year.
On the 21st itself we have a lovely meal with the best quality ingredients we can get/afford, with an eye to high quality animal welfare and environmental policies so that we are helping to sustain the earth as the wheel turns. Real ale, or better still homebrew, is an absolute must! Each year I like to make sloe vodka for the following year too so there is the Daily Shaking Of The Bottle ritual
I have a little altar that I decorate with wintery type things - pinecones, pretty leaves, holly and mistletoe. I normally spend a few minutes there on the 21st, just reflecting on things and thinking about what I can start to 'wake up', that I can concentrate on and grow in over the coming months.
Usually we save exchanging cards and presents for the 25th (when we normally eat beans on toast or something equally excitingly normal) because these aren't part of our celebrations, they are just something we were both brought up to do at this time of year.
So that's it, nothing majorly exciting, and not even that different to most christmases just on a different day.