Schwinn Caliente, only $20. I had one of these 40 years ago, in that classic ‘70s brown. I gave it away ages ago because it was too small for me to ride.

The reason I loved the Caliente was the interesting freewheeling system it used. As you coasted the chain still moved, and this allowed you to easily change gears without needing to pedal. It was a great way to introduce kids to 10-speed bicycles, but even after learning how to ride it was a nice convenience feature.

Hmm, could I put that sprocket and derailleur setup on my Cannondale?...