Interior space

As I get ready to build I have many ideas and questions, so thank goodness for this forum. I was wondering if anyone had thought about setting up the interior with some sort of a cushion/lounge arrangement that could easily be broken down and an air mattress put in place for sleeping quarters. My thoughts come from numerous camping trips that have turned into long sessions of card playing and talking. I also have been really scoping in on cheap/powerwise DVD/flat screen TV options. Any ideas?
Thanks,
joe
Thanks,
joe