I created quick-and-dirty utility for converting characters to render on Sifteo cubes. At this point, you have to do it one character at a time, and you have options for font (any font on your system), size, resolution, and a "threshold" control for fine tuning. Here's what the interface looks like: http://www.evanbooth.com/skitch/SifteoFontConverter-20111007-174340...
Pressing the "Generate Code" button will copy a block of code to your clipboard that will look something like this:
––––––––––––––––––––––––––––––––––––– Color chr_clr = new Color(0, 0, 0); // the color of the text
I've invested ZERO time into this, so the possibilities for improvement are substantial, to say the least. Key improvements areas would include: storing the character data more efficiently (basically drawing each pixel right now), generate a class for an entire set of characters for a given typeface, etc. If you're interested in helping out, I'd be glad to release the source for this utility.