For those spice mixes that you know you will only use once in a great while, try making your own with spices you probably already have in your pantry.
For example: Chinese Style Five Spice
Mix equal parts (powdered): fennel, anise, ginger, cinnamon, cloves.
Now you have incorporated the five basic flavors of Chinese cooking; sweet, sour, bitter, savory and salty.
Look at you now! You’re a chemist. Put it on you resume.