The joint KDE and GNOME
Desktop Summit will be held in Berlin 2011 this year.
That being said,
they're running competition for t-shirt designs for the event! It's a good opportunity to stick your graphic idea onto 1200 global desktop nerds.
You'll need to state that the designs are your own and available under the Creative Commons Attribution Share Alike 3.0 Unported license. Send to entries to:
ds-team@desktopsummit.org