Here's a really easy recipe for cookies using your mix:
Cream together: 1 egg, 1/3 cup butter, and 1/3 cup shortening. Add cake mix and beat until well mixed. You can add nuts and/or raisins if you want, then just put on a cookie sheet as drop cookies. Bake at 350 for 10 minutes, and let them cool on the sheet for about 2 minutes before miving to racks.
Your spice mix would be really good as "gingerbread men", so if you want to adapt this for rolled cookies, add about 2 tbsp flour and chill dough before rolling out.
Good luck - and Happy Holidays!