Chinavision have created addon LCD screens for the Sony PS3 and the Nintendo Wii.which can be retrofitted onto the gaming consoles and have a screen sizes of 7 inches and integrated speakers.

Once the retrofitting is done, these LCD screens will sit atop the consoles in a flip-flop design, very similar to notebook computers. To play on them, you do need to connect them to a power outlet.

Via Gizmowatch

Source: GadgetTastic.com