The Arduino Nano Connector Carrier is a compact add-on board designed for the Arduino Nano boards to allow easy connection to ...

[Don] put together a guide that will help you build your own Ambilight Clone for about $40 plus the cost of an Arduino ... drive all of the modules. We really enjoy the mounting scheme used.

[Daniel] found other small Arduino boards like the Olimexino-85s and the Nanite are not as small as his design. The module has a QFN CPU and castellated holes around the perimeter for mounting.