There are lots of different speaker accessories available for your iPhone, iPad and other tablets and smartphones, the latest one is called Zooka and it is designed to be used with you tablet as well as your smartphone.
The Zooka Wireless speaker Bar is designed to be used as a stand for your tablet as well as a speaker, you can also connect devices to it via Bluetooth, plus there is a 3.5mm audio jack to hook up non Bluetooth devices.
It can also be used as an add on speaker for your laptop, and the idea is that the speaker is portable when in use with your tablet, as you can see from the photos, have a look at the video of it in action below.
The Zooka Wireless Speaker Bar is a Kickstarter project, and the designer of the device, Patrick Triato is trying to raise $25,000 to put the device into production, you can find out more information over at Kickstarter, and it will retail for $89.
Thanks Chris for the tip!