The celebration of 10 years of Gimp marks passing from old to new times. Thus, we can show elements from the both. A common "old" theme involves "Gothic" lettering on aged paper.
We will need a good font. A quick Google search yields found a wonderful page of mr. Dieter Steffmann. Too bad, it's in German -- if you don't speak that language it would be better to proceed straight to His download section.
As most blackletter fonts are hard to read for modern people, we want a font that is not too old. The name "Moderne Fraktur" sounds just right -- and indeed, after reviewing several other fonts it appears that our first try was the best: