[pserwylo]

Traditionally, they are handed out for free at conferences. I'm quite confident that if you are going to a conference or a user group, they'd be happy to post some to you (I'm not part of the organisation, just like what they do).

If you just want something for your laptop, I suggest printing out on a piece of paper and sticky taping it to your machine[0]. Although a license is not specified, I'm quite confident that from speaking to these people (and their philosophy on open source) they'd be more than happy for people to print and share them.

[0] http://bluehackers.org/logos