Nyko's handy iTop Button Relocator
Here's a thoughtful product for iPod owners: Nyko's iTop Button Relocator. This affordable chrome-and-white accessory plugs into the top of any iPod with a dock connector (any iPod with 10GB or more) and maps functions such as play/pause, forward, rewind, and, thankfully, volume control to the iTop's tactile, easily accessible buttons. It's a handy accessory for those who despise slaloming through the iPod's menus to adjust volume, as well as for those who like to stash their iPods in their pocket or bag. Conveniently, the iTop includes a mirrored hold switch and a headphone jack.
The Nyko iTop is the answer for those who complain about the iPod's lack of a dedicated volume control. It feels slightly flimsy when mounted on the iPod and sometimes slips off when pulled from a tight pocket, but for $19.99, it makes a nice addition to the iPod-accessories category. You can also opt for the Apple in-line remote control, which provides the same remapped buttons for volume and track control and is very useful when the iPod is stashed away--though it costs $39.99.