Here’s what I like about having a 3D printer in the basement. Tonight the 9-year-old had a friend over, and we all got some pizza, and on the pizza were a couple of those little legged-spacer things that keep the cardboard box top from sinking down into the cheese and sauce. Both 9-year-olds thought they were cool and took them to play with, and the 6-year-old was miserable.

So while the kids were upstairs watching Chicken Run and eating popcorn, I nipped down to the basement and fired up the Cupcake with a quick sketch from Openscad. Half an hour of printing time later, there was another pizza topper. I told the 6-year-old to be gentle with it, because it was the only one in the world.