You're so right that it's satisfying to dice green onion and get that beautiful gradient.
Have you tried mincing meat by hand? I get incredible satisfaction wielding two cleavers and going to town on some chicken. It's amazing how quickly it turns from chunks to a fine paste. Plus the sound is astounding. My roommates legit gather because it makes such a ruckus and apparently I get a huge smile on my face whenever I do it.
I've been playing with this Garnish technique I saw on Chinese cooking videos where you cut a 3 inch section of green onion, flatten it with your knife, then cut it along the short edge to form long strands of green onion. A few of those delicately placed atop a dish, especially one lacking green, really makes it pop