Lumia Lunchbox Laser


Back in the 1970s, my friend Wayne Gillis and I used to do light shows at science fiction conventions. We had the usual panoply of overhead, slide, and custom-made projectors, and a single, very expensive, helium-neon laser from Edmund Scientific. Calling ourselves Light Opera, and later, Illuminatus, we performed at... Read more »

Stationary Drumcycle


A recent toe injury kept me from running for a few weeks, and I bought a stationary bike to keep in shape while recovering. The exercise bike has a lot to recommend it: it’s low-impact, safe, easy to scale up for harder workouts, and indoors out of the weather. It’s... Read more »

The “Discreet Companion” Ladies’ Raygun

Lady's Ray-Gun

Torch lighters are handy, cheap, and easy to find. They come in a wide variety of shapes and styles, so there’s room for customizing to your personal taste. I normally modify mine with antique parts, but here I chose parts that you can get in most hardware and home stores.... Read more »