I don't really know how I'll cope, emotionally, either, even though I have a few loose plans in place already.
For one, I'm not shopping for anyone. We did this, too, when we'd lost Sabin 6.5 years ago and it helped take alot of stress out of the holidays. I know I won't be able to stand handling wrapping paper or ribbons or bows, as last Christmas Nissa reverted to her kittenish ways (despite being 18 at the time) and was back to chewing on these, especially the ones on her own presents...even at the time, I thought it was a portent, telling me this was a gift from her to me, on what was to be her last Christmas with us.
Two, I'm going to be on the lookout for another Christmas Memorial Candlelight Service put on by one of the funeral homes nearby, where they also have given out glass angel ornaments in the past....so I'll be needing another one now.
Three, I'm still deciding whether or not to put on a small holiday dinner to which we'd invite only one couple who are understanding of our loss...so me and my female friend can share a few (or a LOT) tears together - she loved Nissa, too.
Four, I'm only putting up the tree-
top in a pot and decorating it with some of Nissa's fav*ourite toys, our glass angels and the now 4 personalized glass ornaments for each of my major losses.
Five, I also use these ornaments in a beautiful little ceremony I found for loss where you light candles and read a few verses that symbolize the meanings of the loss.
Six, my H and I might even stay at a local hotel for a day or two, just to do something more relaxing for ourselves.
Seven, try and plan for some exercise, like cross-country skiing or something.
Eight, I'll
consider attending one or two dinners that will be put on by another friend who knows how difficult this season is going to be for me, one on Christmas Day (less likely) and one on New Year's Day (more likely).
Nine, I'll be asking the few closer people who remain in my life if they'd like to write something, anything, they'd like about Nissa so that I can put it in hers or my stocking (hers is pretty weanie) and I'll get to read them on Christmas Day.
This whole season has already been a really tough time for me over the past 6 years, because first we lost Sabin on Feb.2, but his first collapse came on New Year's Eve (and we spent the Eve and Day visiting him in the Emerg. Clinic)...and then he only lasted another month. Then in '04 I lost my Mum on Jan.2, right after New Year's Day...and then my oldest brother on Feb.29 (a Leap Year), soon after Sabin's Death Anniversary. So while Nissa's the only one who didn't cross in the winter, we've never NOT had her with us during both Christmas and all these anniversaries during the holiday season. So THIS year?....I'm truly worried for my sanity as this is a time I've been dreading for so many years already, with no Niski here to lend her wonderful charms and comfort to a really stressfilled time of year for me. I feel sick just thinking about it and fear I might need an awful lot of 'nog to get me through.

And I thought I'd add this link for anyone who's interested. While it deals with human loss, I've taken a few ideas over the years from these articles, as many can just as easily be used for dealing with furbaby losses. The site they come from also has a section devoted to pet loss and the holidays, but I found the human section had more, but you're free to look around there for more articles.
Coping With The Holidays