Keep the moisture out of your spices [SEP] I got these for my truffle salt and garlic salt.  You have some spices that can clump up, like garlic powder, that will work well in these shakers.  One thing to note is that the holes are very very tiny.  The parsley in the garlic salt would get stuck.  It’ll work well for spices you want you add sparingly.  Keep this in mind when making your choice.  The lid is spring-hinged so you’ll need to hold it in a way to prevent it from snapping shut as you’re sprinkling.