My wife and I picked up a Kogan 7inch Andriod Tablet via the ebay store they have for a really good price, so we purchased it for Darwyn to use.
I’ve installed a 16Gb microsd card in it and put on the entire Octonauts series for him in mp4 format. Plus a few other programs he likes.
I rooted the device using the details at the XDA link here. This allowed me to backup the factory firmware using SuperOneClick. I next installed MoboPlayer via alternative method, as any attempts to install via the Market app on the device resulted in it not being seen. The process to root it was super easy. I even put Cyanogenmod7 on it, but later removed it, as it’s not really designed for a tablet, but indeed worked (although some things didn’t i.e. camera etc).
EDIT: Sorry clockworkmod backup is installed first, so you can do a backup of the firmware from factory + rom. The SuperOneClick is the app ran on Windows for example to root the device.