Kat and Cam of Our Nerd Home have a great holiday craft for role-playing gamers. The d20 is obviously the most complex piece and the pair describe it as “a patience-trying project.” It’s hard to get the angles correct and cut out without breaking the graham crackers.
Once you do cut out all the necessary triangles, glue them together using melted white chocolate candy. Make three dome-like structures out of 5 triangles each, then connect them. You’ll probably need an extra set of hands to do this correctly. Then add red frosting for the numbers and roll for initiative.