I'll try this:
Focus on a select a subset of icons, free/public domain.
Eg. a small collection from The Noun project, for example.
Icons of this kind can be easily be turned into significant and beautiful pictures :
http://playhundreds.com http://responsivemuseum.com/ (ok, this one is a quick project my friend Geoffrey and I did to shake up museums. Still, he cleverly turned icons into a logo, some strong pictures in just a few hours)
That would allow us to build a very simple, clean, modular *and* distinct feel to the template.