Very nice hotbit, good to see some nice gridcoin posters. If you stick with inkscape you'll find it able to produce some really good stuff even though it's free.

Is there any sort of central repository of Gridcoin marketing material and "fan art" anywhere?

I work in 3d design and visualisation and i've been trying to come up with a couple of ideas of how I could put those skills to use to help out gridcoin. Does anybody have any good ideas they would like to see, or is there anyone specific worth asking?