[brbcoding]

So many of those beg to be t-shirts.

[dtparr]

Unfortunately, from the FAQ[1]:

Q: Can I create a product containing an octocat?

You may not use an octocat, created by GitHub or by you, for products or merchandise without written permission from GitHub. This includes, but is not limited to t-shirts, toys, stickers, etc.

[1] http://octodex.github.com/faq.html