Your first car.
My first car was a 1970 Pontiac Tempest. My dad bought for me when I was 15. He paid $150 for it. It sat in the back corner of the shop for about 8 months until I got my license.
I drove it for 9 or 10 months before the carb took a crap. Never could get it to run right again, so we sold it. Ended up with the 66 Barracuda I still have today.