The Blank Gomi, which drops tonight at 8PM PST, comes with eyebrows and teeth. You can customize it, send it back, and your custom will be featured in the Gumpy Custom show on October 1st 2011 at Gunnzo in San Diego.
The best part is that it's free...just pay shipping ($2.50 in the US). It's limited to only 50 pieces. You'll need to prime yours for painting. And random custom Gomi pieces will be sent with the 50 free ones (limited to 10 pieces and 2 translucent chase versions). Check it out here.