@bluesforbuddha My brother is planning to build an “emulator box” PC for his TV, he’s been showing me tons of small cases for that purpose. He already built a “smaller” PC for LAN parties and such, I can ask him for you if you want.
http://www.silverstonetek.com/product.php?pid=291&area=en he has this one but there’s a smaller case too:
silver stone has a few others too.
edit update: brother asks what size are you looking for?