I created a couple speaker badges for the upcoming Scotland on Rails conference:
If you're not speaking at the conference, but you are going, and excited about it, there's no point spurning that enthusiasm, so I made a badge for that too:
Of course the cool part is that this is a European(ish) conference, so I get to bring in that cool European design style. Europeans make Helvetica look good.
There are two other European Ruby/Rails conferences happening just before Scotland on Rails - Euruko and Ruby Fools - which, for those of you in Europe, makes a really nice excuse for a holiday your boss might even pay for.