Unless you're a full-blown repairman with a utility apron, working on small household projects usually includes a part where you're trying to hold screws and nails in your pockets or mouth. Instructables user genterara solves this problem with a simple magnetic wristband.
It's an easy-to-make and creative solution. Using an old sweat wristband, all you need to do is attach a few round magnets to a larger kitchen magnet with glue, and then stuff it inside the wristband. Now you have an easily wearable and transportable screw holder.
Magnetic wristband [Instructables]