Originally Posted by ilona
Take a look at this link. There are a couple of ideas for your project. I've made two 6X9 format cameras for 120. One is 80mm & the other is 57mm; both would be considered wide angle for that format. If you're going to process the film yourself the format choice is wide open but for lab processing I'd go with 4.5x6, 6x6, or 6x7.
There's another thread here on a similar topic.