Xandria

I love the wallpapers and art works on this website, but do not wish to use anything inappropriately for my current project. I am creating a presentation for an anime/manga convention, and would very much like an anime/manga themed PowerPoint template to use. On the one hand I do not wish to choose a specific fandom, but on the other, what else says "otaku"? Does anyone have any suggestions, artistry skills that they'd like to donate to the cause etc.? Thanks much. Xandria