Our Board of Experts for the 2008 Best Software Awards had plenty to say about hardware accessories as well. Below are their comments about their favorite accessories for Windows Mobile smartphones and PDAs. (Comments have been edited for clarity and to eliminate repetition.)

Power accessories.
Gomadic Wall AC QuadCharger

gomadic.com

QuadCharger lets you power up to four devices simultaneously and eliminates the tangle of proprietary power cables. Custom adapter tips are available for thousands of mobile devices.
Andy Mason mobilitysite.com

Lil Sync USB Mobile Power Pack

pocketpctechs.com

This tiny battery pack provides an amazing 4,000 mAh of additional power. Since it connects using the cable that came with your mobile device, it can be connected to just about anything.
Doug Goldring
justanothermobilemonday.com

Motorola P790 Portable Charger

direct.motorola.com 

The Motorola P790 Portable Charger is a handy, easily pocketable unit that provides several full charging cycles to WM devices. It connects via a standard mini-USB connector, so it can work on a variety of devices.
Matt Coddington
windowsmobilelouisville.com

Proporta Ted Baker Six pack

proporta.com

This useful and very portable power accessory comes with a world AC charger and vehicle adapter, a retractable charging cable with interchangeable heads, and a mini-USB to USB cable.
May Cheung
palmdiscovery.com


Solar Express USB adapter

lightconecorp.com

Solar Express is the only adapter I've found that lets you connect a USB storage drive to your Windows Mobile PDA. CF card slot required. It works with certain memory sticks, keyboards, and even hubs.

Nate Adcock
smartphonemag.com/blogs

GPS
Globaltop 33 Bluetooth GPS

gtop-tech.com

This GPS receiver is inexpensive and performs as good as or even better than the more expensive models. The Bluetooth range is very good. A very attractive purchase!

Juan Gomez
juandg.wordpress.com

Headphones
Aliph NEW Jawbone 

us.jawbone.com