I had an old PSOne LCD screen lying around and I thought I'd make a C64 laptop. Actually, it's more like a C64 PDA! It measures 6.5 x 6 x 1.5 inches (15.5 x 16.5 x 4 cm) when closed. It can run from an AC wall adapter or 6 NiMH AA batteries. The keyboard is hacked from a portable folding keyboard for a Jornada PDA which outputs RS-232. I'm using a PIC 16F88 to decode the signals and re-encode them to PS/2 ... There is an internal amplified speaker as well as connections for audio and video output on the back. There's a serial connection for a disk drive and an SD card slot in the side for a 1541-III but I haven't been able to get that to work yet. I also have a connection for a userport/joystick. The joystick in the picture is a hacked Atari keychain joystick.