Last time I ordered spices, I picked up several small bags of different salts to try. I haven't done much with them as I rarely add salt to food. But I do like to sprinkle the smoked salt on eggs (scrambled, over light, hard boiled) and the seasoned ones are really good on popcorn.
Applewood smoked and hickory smoked (I like the applewood the best, and yes, it smells like it's charred or burnt, but it tastes good)
A bacon seasoned and a jalapeno seasoned, both good on popcorn but the bacon one is to die for
I also got a couple others but I haven't really been impressed with them. A black lava and pink something, I forget the name. And the last one I haven't tried yet because I forgot what I was going to make with it

Kala namak, Indian black salt.