The Optimus Mini Three Keyboard is back in stock at ThinkGeek.

The Optimus Mini connects to your PC via USB and features three keys, each with their own backlit OLED screen. Each key can display a static image or animation (3fps). The bundled Optimus Mini Configurator software allows you to assign various actions to each of the three keys.

The measurements are 116x51.8mm. One OLED screen measures 20×20 mm and has 96×96px.

ThinkGeek sells the Optimus Three for $159.99.
The Optimus OLED Keyboard first appeared in July 2005. The full keyboard is supposed to be available by the end of 2006. See also this review of the Optimus Three.