Every once in a while I will forget to restock a certain spice and I never notice until need it. Allspice is the last one I did this with and so in case any of you run into the same problem, here is how to make your own allspice.
 
1 Tsp Allspice = 1/2 teaspoon cinnamon plus 1/2 teaspoon ground cloves
 
Easy peasy.