Regarding another challenge, one of my favorite genres is Steampunk, "a subgenre of science fiction and sometimes fantasy that incorporates technology and aesthetic designs inspired by 19th-century industrial steam-powered machinery." Several of my favorite vendors at Renderosity (1971s, jonnte, Cybertenko) have 50+ Steampunk items each, and I own about 60 total items from those three. So how about a Steampunk challenge (if it hasn't been done for a while), or just Victorian if you prefer. On a related note, the 2014 Oscar for Best Short Animation went to "Mr. Hublot", a Steampunk style dramedy:

https://www.youtube.com/watch?v=doA661MoGy0