You can also have everyone bring recipe cards with them - that way if you love a particular cookie/dessert, you'll be able to recreate it later, so it's also somewhat of a recipe exchange as well. And of course I would expect you to have some wine/festive merriments as well (possibly a favorite holiday movie on in the background?) for a fun night in. It's always entertaining to see what desserts other people came up with (and if you have a competitive group, it's kind of amazing to watch everyone try to out-Pinterest each other, right? :)
So if you're looking for an easy fun get-together for the holidays (that actually provides some functional holiday help during such a stressful time of year!) I would definitely recommend you try this out. It's so easy to host and it's a great excuse to try out your baking skills (and an excuse to try out all your friends' baking skills as well). Wine and lots of desserts... yep, sounds like the most wonderful time of the year! :)