While the outdoors may not be the first thing that comes to mind when thinking of places to hold a winter birthday party, there are a lot of advantages to throwing one! For your sake, you won't have to keep a watchful eye on a dozen little kids hopped up on sugar running through your house and the little ones will adore the chance to run and play in the snow.
There are so many different directions you can go with a party such as this that you're bound to find something that will appeal to you and the children. Pack up some hot drinks and a cake and take the kids sledding for a couple of hours. Or how about ice skating? Drive over to a park with a pond and let the kids slide around! And if you live in a city there's likely an indoor rink nearby.
If you would still like to keep things at your house, simply have the kids build snowmen out in the backyard after celebrating inside. You can supply shovels, pales and other toys that will help sculpt and move the snow. Just be sure to mention on the birthday party invitations to bring proper snow gear!