DIY web site Instructables steps through how to build your own scroll wheel—like the $45 Griffin PowerMate—with an old mouse, remote control car wheel (or similarly sized wheel that fits your hand), ...

A lot of headphones today come with volume control built in on the wire. If your headphones didn't, though, you can craft your own with a few basic, salvagable electronics. There are actually two ways ...

If you buy expensive computer speakers, they often have a volume knob you can mount somewhere on your desk so you aren’t dependent on the onboard volume control. [Kris S] decided to build his own ...