Using a handheld screwdriver in tight spaces can be very frustrating, especially when there isn’t enough room to hold the screw in place with your free hand. Here’s a solution for just such a situation: Attach a small magnet to the shaft of your screwdriver. The magnetic magic will travel through the metal of the screwdriver, down to the business end, holding the screw right where you need it—with no hands!
This trick works with other tools, too. Magnetize the head of a hammer to hold a nail, add a magnet to the metal bit in a power drill/driver to hold a screw—you get the idea.