No, they're computer graphics (some elements are "verbatim quotes" from other items in Alex's portfolio, like the LED spectroscope on the 'pod), and no, that doesn't mean they're easier than, say, a one-off airbrush & pencils piece. Except, that is, that once a model has been created, it can be manipulated and duplicated (as in the six-Laptron "star").

It looks like there was a lot of back-and-forth between something like Illustrator, Photoshop and (probably) 3DSmax (the hooks to the Adobe stuff make it a good workflow tool). The lighting and shaders are well beyond anything I've ever been able to do, but there are little -- really tiny -- mistakes in some details (physical dimensions of real-world things us old folks are intimately familiar with that kids wouldn't notice) in his work that tell me these aren't physical mockups (the way we used to do it in the good old days). Still, there's a lot of work represented here.