I love using turmeric. You’d be srprised how well it pairs with so many things, plus it’s very healthy. It goes naturally with a lot of middle eastern and south asian food, but you can also add it to sauces and soups for warm and earthy notes (if that’s your thing like me).
As for spice mixes, I love Cadaver’s greek seasoning. It’s pretty simple (salt, pepper, organo, with a few others) and you can enhance pretty much anything with it

Autocorrect lol. I indeed meant “Cavender’s”