It shouldn’t come as much of a surprise, then, that you can also still buy and build the Visible V8 model engine kit, first sold by ... the origins of plastic car models, we must go back to ...

The $29.99 all-metal desktop Stirling engine kit is one of the simplest ... sells for $89.99 and is functional when assembled. The model is advertised as being suitable for ages 12 and up.