This may not seem like a big deal to some/most people, but a peeve of mine is when I’m bolusing, and my bolus is still dispensing, even though I’ve finished eating.
A main reason for this (for me, at least) is that I have eaten too many carbs. That is my downfall – those darn carbs.
And when I’m eating whatever delicious snack/meal I am devouring at the time, and I take my last bite, then realize I still hear the subtle clicking of the bolus … I start beating myself up. “Ugh Shannon, you didn’t really need to eat that.” “Or “If only you’d eaten/bolused for HALF of the meal.”
It’s like it’s a subliminal reminder that I have eaten too many carbs, and I always ask myself “Was it worth it?”
As I’m typing this post, I splurged on a “high” carb snack earlier, and I finished it several minutes ago, yet my pump is still bolusing. *sigh*
I continue to be a work in progress. 
Oh boy, I can only imagine the added subliminal guilt that sound adds. Maybe we can figure out some sort of sound-muffling, guilt-reducing case for you to use?
Sounds like a very marketable idea, Scott!