I have a week's vacation coming up when the tour reaches Chicago, and I plan on spending it in the driveway, twiddling wrenches on my Cabrio. Here's my "laundry list"...
Front & rear de-badging
Cruise control (Area451 w/John_H's dash LED)
Armrest (Smart Madness; the adjustable model)
Headlamps (Smart Madness; black w/blue trim, matches the car)
New horn (Nautilus 139dB from Aerostich)
Color-matched spoiler, valance, side skirts, fuel door & air intake (SmartPartsDirect)
Carbon fiber roll bar trim (Smart Madness) w/cabrio wind screen
Front & rear bumpers (Breathess)
Sound system; Pioneer AVH-4100DVD & Polk db675 speakers and sound-deadening (thanks, brian_r!)
Fog lamps (lamps from eBay, button bar ordered from my smartCenter)
That'll do for a start. I plan on doing a lot of carbon fiber trim on the interior, and getting a set of custom black gauge faces from Harald at parts4smarts.ca, too.
Long-term plans include intake and exhaust work, blacked-out 17" wheels with decent tires for good weather, keeping the OEM alloys with a set of Blizzacks for winter driving.
EDIT: ...And a CF stubby antenna. Thanks, Terry!