There is already a collection of designer add-ons for the Play Station Portable looking to follow the hugely successful ipod accessories market. The most interesting for me is this...

There are currently no games or packages available to take advantage of the keyboard but that hasn't stopped Level 3 from making it. They know something we don't but it's not surprising really. The PSP has a WiFi card, a USB port and most importantly the ability for system updates from Sony. Look out for a browser 'update' soon and bingo I you've got a thin client we device in every school kids hands. I had been working on a small device Learning Solution using the ill fated Sharp Zaurus but the PSP is sure to have a longer life span and worth investing the time.