OK, I'll sort mine like Clem.
OEM front/side clears
OEM CD changer
OEM mudflaps
OEM UGDO
OEM alarm
OEM driver's split dual-convex mirror
OEM chrome exhaust tips
OEM euro first-aid kit
Motorola V60 integrated hands-free kit
Blue or super-white interior bulbs throughout
red-painted rear turnsignal lenses
Narva all-weather foglight bulbs
Hella 3-trumpet airhorn
Alpina Softline 18" wheels with Pirelli PZero Rosso 235/40/18
RacingDynamics swaybars with UUC rear endlinks
UUC Motorwerks Street.Evo SSK with delrin carrier bushing and lower cartridge bearings
In Progress:
Audio upgrade with Peripheral VEN4, Blaupunkt PA4100, Focal Polykevlar 130KS and Morel Hybrid HCW6.5
Near future:
E46M3/Cic rear shock mounts w/Z3 reinforcement plates
E46M3 strut tower bar(??)
Euro rolltop center console with pen holder
UUC Motorwerks carbon fiber interior trim