Element14 capacitive touch screen £60
Apple ipad mini battery £10
Lithium battery charger and 5v usb 2a driver board £5
Raspberry pi 2 £35
Soldering iron and skills
Ply wood and saw skills £5
Dremel and cutting discs
Wood glue, hot glue gun
Step 1: Uses Element14 7 Inch Capacitive Touch Screen. Dremel Away the Screw Tabs and Buy a Longer DSI Cable.
Step 2: Remove Tall Components From Raspberry Pi Pcb. Ethernet and Dual Stack Usb Ports.
I had a USB power and charger PCB with two single height connectors... so i robbed them from the pcb and they fitted nicely to the PI... (Shown in picture 2 - lower picture)