Raspberry Pi laptops and tablets are nothing new. A bunch of them are being sold online these days. This Yet Another Raspberry Pi Laptop Kit comes with everything you need to build your own. It comes with a mini Bluetooth keyboard with touch pad, 7″ display with driver board, cables, and a 3D printed case.
Simply bring your Pi, Micro SD card, and power supply, and you are ready to go. GatewayImprints is selling this on Etsy.