Cardamon seeds. They’re great.
Take a green cardamon pod (brown cardamon pods are too hard to do this with. Those things have to be cracked like nuts) and crush it lightly with a rolling pin or something else that lets you apply a little force.
Eat cardamon seeds. Very, very strong. Very yummy.
Fennel seeds, chewed straight up, are pretty addictive, too.
I used to eat this Japanese rice seasoning stuff (roasted nori, little bits of dried shrimp, sesame seeds, lots of salt) directly from the bottle. Man, that stuff was addictive. Every now and then, I’ll find myself munching on pieces of nori.
I can’t resist taking a spoonful of straight crystallized honey from time to time. Actually, at times I’ll mix almond butter and crystallized honey together in a small bowl or cup and eat it straight.
I grow various herbs in my garden, and I’ve eaten those as salad leaves on occasion. But I’m not sure that’s quite what you have in mind.