"Fanfare" horn, heated seats, OEM alarm, smart sound system
It was the (now defunct) smart centre Alexandria first installed "Fanfare" horn, a genuine smart part, somewhat more authoritative than the wimpy OEM, but doesn't give heart attacks to pedestrians.
2008 smart passion coupe (w/s/r)
Really fashionably "unplugged" GPS, totally environmentally sound but without sound though...
A SCoA sticker on the flat bottom narrow edge of the trunk lid.
iPhone via aux-input... more than enough entertainment! I don't phone while driving, it's a full-time occupation!