I use a faulty SAI/UPS box for my experiment all inside.
*) power supply like http://www.dx.com/p/t-36-12-12v-3a-36w-led-switch-power-supply-adapter-silver-312246#.WLYEzRC5JTE (and regulated to 12v.)
*)power cubie adapter with a cable soldered in botton of usb ports for power my cubie
*) base breadboard for cubie for my diy gpio tests and call a poweroff/restart/backup script from button.
*)usb temper for check inside box temperature with a script.