How to do… almost everything. It’s a big page. I never knew that instead of washing, you could just freeze your jeans for a week. Or that you could chill wine by adding salt to the ice bucket (which makes perfect sense now that I recall my Chemistry classes).

The Null Device links to the ‘dark flash’, which is an infrared flash that could turn bright flashes in the night obsolete (saving all those people in say, football stadiums, the embarrassement of being seen using a light source with a range of 8 meters to snap a picture of the far side goal). But I started thinking, isn’t this something you can already do. There are plenty of tutorials on how to remove your camera sensor’s infrared filter, and I’m pretty sure you can fit a IR-transmitting filter to a flash to achieve the same effect. Lots of interesting exposure calculations (as you need to compensate exposure in higher wavelenghts) will follow, I’m sure.

It’s stupid simple. Although I don’t think it’s such a good idea to have the camera’s LCD screen pointing at you while driving. Anyway, speaking of DIY and Instructables.com, they released a ‘Best of’ book, which you can also read online.