Christmas toys you'll never see again
I had this one:
Vintage Cox .049 Gas Powered Vega Funny Car (kammback wagon) « Somewhere along the line, I took the engine and "transaxle" out and mounted it to my home made slingshot dragster. I made it out of hobby store brass tubing soldered together. It actually worked!
A friend carved a balsa wood land speed type car (about a foot long) and stuck an Estes rocket in the back of it. He made a control line (with the "Y" at the end to stop it) out of fishing line. We lit it off in a church parking lot (his dad was the minister), and it promptly melted the line and went BONKERS! It ended up bouncing crazily under the church bus! Some fun times! lol