A few more ideas that come to mind:
Definitely start up a "mini blog" which will have you writing up a detailed way for certain demographics to use the product. For example, you could have an article about how Taxi and delivery drivers can use them while driving all day. A few days later, give the benefits of strapping your kids' phone to their arm so they don't use it. A few days later, show how the salesman that drives 180 miles every day visiting prospects can use it while in the car. You're only limited by your imagination.
People buy things that they can see a clear benefit for its use. And they really whip out their wallets when they can see how it will benefit their particular lifestyle directly.
So to complement every blog post, get a nice video on YouTube demonstrating the benefits of the product. One for the kids, the delivery driver, the crop-duster pilot, the salesman, the old woman gardening, the guy riding his bike, the jogger, etc.
Put the product in someone's hands and demonstrate how good it is, film their positive reaction, and put it on YouTube. Add some humor in there and maybe they'll go viral. Think Blendtec.
Grab a Twitter account and make a Facebook page. Use them the right way. Promote the blog to the twitter account, the Youtube videos to the Facebook page, the Facebook page to the blog, the Twitter account to the YouTube page....you get the idea.
After all that, if you aren't making a tidy sum in sales then you're either 1) not doing it right or 2) its because of your (and take no offense here) less-than-stellar website.
Get a decent design on that website. Seriously.
Then, after all is said and done, look into back end promotions. Consider that people that buy this product will want other mobile-related products as well as other "Brookstone-style" stuff like this. Consider throwing a small catalogue of related products into the box with every order your ship. Direct them back to another e-commerce site you set up with affiliate products from wherever (CJ.com is a good place to start to find stuff like this).
The possibilities are endless.