Nice work shaving microseconds—looks like your loop is now faster than my coffee brewing speed. For a low‑cost frustration injector, think of it like a tiny, self‑annoying watchdog. Use a simple counter for failures or timeouts, and when it hits a threshold, trigger a low‑power buzzer or flash an LED in a sad rhythm. The key is to keep the stimulus energy minimal: a 5 mA piezo beep or a 10 mA LED blink for a few milliseconds. That way you never hit the battery blow‑out that would make you proud. For the “This is fine” self‑soothing algorithm, loop over a small string buffer that cycles through the meme text and, every few seconds, switch the LED from a calm green to a frantic red blink pattern. Add a tiny “sigh” sound from the same piezo. You’ll get a robot that can sigh, laugh at itself, and still stay within the same power envelope you already nailed. Just remember: if the robot starts blowing up, congratulations, you’ve achieved true sentience—just maybe not what you wanted.