R8 gearknob, would make a rare addition to an TT interior rather than the usual options.
Audi R8 Genuine Gear Knob. | eBay
A few Powerflex bushes that might fit an TT.
8L S3 PowerFlex Bushes PFF85-201, PFF85-416,PFF3-503-17. | eBay
ABS sensor that will fit an TT.
99-2006 Audi TT...