This isn't strictly home-based, but I love the way they've used scrap fabric to completely customise their car.
Floral Chevron Car Seat Covers Set Of Two Front Seat Covers Monogrammed Personalized Car Accessories Seat Covers For Car For Vehicle by ChicMonogram on Etsy
1 Set Of Shadow Diamond Turquois Print Seat Covers by ChaiLinSews My birthday is coming up!:)
1 Set of Turquoise/Rust Aztec Strip Print Seat Covers and the Steering Wheel Cover Custom Ordered.
I should totally sew seat covers for my car with Mexican blankets!
Peace Symbol Seat Covers for Car SUV - Front & Rear Set
Gotta have camo+pink seat covers for the truck! Or a full bench cover
FH-FB115114 Full Set Polka Dots Car Seat Covers for Car Van and SUV, Red / Black color, http://www.amazon.com/dp/B00DMEFH7W/ref=cm_sw_r_pi_awdm_xK1mvb1PR6NVR
Car Accessories by CoverWheel - so many cute steering wheel covers...for the future!
Seat Covers for Car.. $69.99, via Etsy.