====== Do you wish you could get your Bukobot to turn itself off after it finishes a print? ======

Then have a look at these instructions: http://betterprinter.blogspot.fr/2012/11/auto-shutoff-at-end-of-print.html

For the Azteeg Controller you simply need to recompile your Marlin firmware to change 
"#define KILL_PIN -1" to be assigned to any one of your unused digital output pins. [Any non-ground or power Arduino expansion pin can be used as a digital output - even the ones marked as analog input inputs or serial connections (SDA/SCL/TX/RX).]

There seem to be a couple of options for relays:
- the one mentioned in the link is the SSR-25-DA: such as http://www.ebay.com/itm/SSR-25-DA-Solid-State-Relay-For-PID-Temperature-Controller-25A-Output-24V-380V-/280776557335 (6.4cm x 4.5cm x 2.3cm)
- you could also get a non-solid-state relay such as www.ebay.com/itm/New-One-1-Channel-Isolated-5V-Relay-Module-Coupling-Arduino-PIC-AVR-DSP-ARM-/280780564636 which is slightly smaller (6.5cm x 1.7cm)

With a bit of planning or minor redesign one of these should be able to fit within an enclosuure such as described here: http://bukobot.com/adding-a-mains-power-switch