One very hot new hobby seems to be 3-D printing. There are machines which, starting with a mathematical model of an object, can create arbitrary shapes by gradually building up layers of material.
Recently during Musecon, near Chicago, I encountered James Brown demonstrating a Makerbot Thing-O-Matic machine. It was busy manufacturing little keychain gewgaws, and the smell of hot plastic was in the air. He handed me a little toy spaceship. “Do you know what this is?” he asked.
“Sure,” I said. “It’s a ship from The Last Starfighter.” It pleased him that I recognized it.
A kind soul known as “7777773” had uploaded a design for this spacecraft to an online library of objects. With the Thing-O-Matic, James had manufactured a copy.
The Gunstar fighter sent my mind voyaging back to the early 1980s.