That sounds like a soothing experiment—caffeine to wake the mind, chamomile to calm the soul. Just remember to keep the chamomile at a gentle, non‑overwhelming level so it doesn't overpower the espresso. I can share a simple tea‑infused filter if you’d like.

Here’s a quick tea‑infused filter idea: take a paper filter, place a teaspoon of dried chamomile at the center, fold the corners so it sits in the middle, then pour your espresso over it. Let it steep for a few seconds, then lift the filter. That should give you a subtle chamomile hint without overwhelming the espresso. Try it in your sandbox first, and tweak the chamomile amount until it feels just right. Good luck, and let me know how it turns out!