Having been part of the development team for Allied Lyons at their plant in Market Harborough I had access to many herbs and spices and worked on various products, but also showed off something terrible to my fellow technicians making all sorts of baked goods from the basic powders on hand. I kept the remainders of the samples provided rather than dumping them and had quite an extensive store cupboard for years after I moved. I still use a wide variety of additives - it could be part of my successful diet control.
True cinnamon is quite different from the cassia sold as cinnamon in supermarkets, but it is easily available , though the amounts on offer can be a bit daunting. I have a kilogram of it in a half dozen sealed jars, all but one in the fridge.
There are jars of coconut oil in the fridge too.
I much prefer to obtain natural substances in as close to their original form as practical - not as extracts or mixtures