I feel like all these people need snazzy nicknames like florahart has for hers, but I can't think of anything catchy. Brothers could be B1 and B2 I suppose, but it doesn't work for anybody else, and nephew is the only one, so N1 just makes him sound like an avian disease. I should just call all my brothers and my SiL 'Bob' and nephew can be miniBob, but I feel that only nephew would find this particularly hilarious. And he's 2. and doesn't talk. so.
Mmmm couch. I love my couch.