That last one's pretty funny.Ok...
How about a magic coin purse that always has the exact amount of money and coin change needed to complete a transaction?
Pens that immediately throw themselves away when they won't write anymore?
The ability to harmlessly mute barking dogs and hysterical infants?
When you're in an awkward or dangerous situation, you can actually point and say 'Look! What's that over there?!" and some terrifying hallucination effects your would-be attacker, allowing you to escape.
The ability to always find an immaculate public bathroom stall.
Oh boy... this could get very distracting... last one for now...
Always know who stole your lunch from the office fridge by calling out "Theif!"... and the theif immediately vomits up the stolen food.