Good luck with the Thanksgiving challenge! My husband & I are both vegan and have friends who are gluten free & with dairy allergies, so we make vegan & gluten free food pretty often. I have to second the suggestion to check out Oh She Glows...GREAT stuff there, I've loved every recipe I've tried from her.
We also rely heavily on Allyson Kramer's 2 vegan & gluten free cookbooks as well as recipes from her website (
http://www.allysonkramer.com). She's posted several delicious looking vegan & gluten free pumpkin recipes (including a pumpkin pecan cheesecake which we haven't tried yet, but it sounds delicious:
http://www.allysonkramer.com/2014/11/pumpkin-pecan-cheesecake/).
She also has a post full of some Thanksgiving recipes up at:
http://www.allysonkramer.com/2013/11/gluten-free-vegan-thanksgiving-menu/
The main warning I give when recommending Allyson Kramer is that she tends to oversalt her recipes, so if you try her stuff, try starting with less salt than she calls for...I typically eat low sodium and a lot of raw vegan food, so I find that starting at half as much salt as she suggests is a good starting point for me, but my husband typically prefers if I use more like 2/3 or 3/4 as much salt as she calls for in her recipes.
There is also a good master post of vegan Thanksgiving recipes at:
http://www.runningonrealfood.com/4-vegan-thanksgiving-menu-options/
Some of them are gluten free too but, frustratingly, she doesn't indicate which ones are, so it might take a little looking, but you should find some good ideas there.
In other recipes...if you like pomegranates, this pomegranate cranberry sauce is awesome:
http://nutritionstripped.com/pomegranate-cranberry-sauce/
But this is actually my all time favorite cranberry sauce recipe:
http://www.therawtarian.com/raw-cranberry-relish-recipe
(She calls it a relish, but we eat it like cranberry sauce. We had 3 cranberry sauces last year and this raw vegan one was the first one to be completely eaten up!)
This vegan & gluten free quinoa sweet potato dried cranberry "stuffing" is delicious:
http://withstyleandgraceblog.com/20...to-and-dried-cranberry-stuffing-thanksgiving/
Most likely none of your vegans are raw vegans, but if they are, let me know. I have a ton of good Thanksgiving recipes that are raw vegan, but they are typically a bit more pricey, so not in keeping with the budget board theme...
~Meg