Here's a frosty little fella, just perfect for your winter gatherings. The trickiest part of making a white macaron, is keeping it white. Five failed batches later, I finally figured out how to keep them from browning - put a layer of tinfoil on the top rack of your oven while they bake.
I found some great food coloring pens at Cake Stuff to draw on the eyes, buttons and scarves. They worked like a charm! I highly recommend them.