How do you repurpose those dried herb/spice containers?

You can always make your own seasoning blends more cheaply than buying stuff like
“sazon”, even if you buy the components pre-ground. Put them in empty shaker-capped spice jars. Use for cinnamon sugar, vanilla sugar, powdered sugar when topping cookies;
as a flour shaker for bench flour when rolling dough; use to sprinkle seasoned flour on
raw chops, chicken, fish before sauteeing them. Shaker tops give me more control decorating cookies with nonpareils than pouring them straight from the plain container they come in. I buy MSG, garlic powder, etc., i9 large containers from which I refill smaller ones which fit my spice carousel.