It's worth it to know how the client cooks and stores stuff. Some people have a variety of spice and other containers of different sizes. People buy spices because they like the fancy jars, too. Also, it's improvement to know how people use spices. Some people just buy stuff and never use it, so they need a lot of room. Other people have just need salt and pepper by the stove. My mother had spices in little rectangular cans that had come from her Mother's kitchen. They all ate the most bland food you could imagine.

I make a lot of Indian food. I heat up the oil, and throw in spices before they burn. I have quart jars on the counter for access and speed. The lesser used spices are in little jars from Frontier Herbs, in a drawer.