Oh you have yummy plans!!!!
Well I'm not sure the first two recipes will be right for what you want - recipe for the first one suggests baking them in cupcakes papers

The second recipe is what I chuck anything and everything into - quinoa flakes, puffed amaranth, choc chips, sunflower seeds, cranberries etc - yummy biscuit but more like a cookie.
But the mince pie pastry will work - it might seem too soft when you first pull it together but once it's rested in the fridge and you've added plenty of flour to your surface it tends to firm up a bit. I found rolling it between two sheets of baking paper easiest then I cut them, rechilled them and then removed the excess dough and baked at 170. So tricky and involved but it works. It's very sweet though - you may want to reduce the sugar but I'm not sure if that will affect the final outcome. I recommend a trial run before the party (you could make the pastry (it's a big batch), make one test batch and freeze the rest of the pastry if it's a goer). The sweetness offsets the xmas mince meat very nicely :yumyum:
Otherwise there is a ginger bread man recipe knocking around here - you might be able to find it through the search function...

Or just google sugar biscuit/cookie and lots of gluten recipes will come up then sub with GF and xanthan gum - the egg is the trick to bind it all together I reckon!
Good luck.