Not very, but I have a full rip of the Borderlands art assets handy to work with and passing photoshop skills. I did manage to make that background image entirely from scratch, after all! I could probably work on some icons for other purposes though if need be, I've made icons a few times in the past.

Also if there is future support for multiple sound files for each callout, that's what the "mega packs" are going to be. There's simply too much material for some characters in Borderlands to make one pack, so I've got TONS of alternate lines to use already.