As your resident iPad advocate, I will continue to say that the iPad is the most versatile computer on the market. It can be a laptop, tablet, e-book, a notetaking machine, or even a portable display.

There are thousands of old aluminum iMacs sitting around the world, doing nothing (the one in Macworld’s Podcast studio comes to mind, replaced by a newer M4 iMac). A lot of those old iMacs have ...