I actually have an 8x10 pinhole project "under way" here, slowed by mundane trivia like getting out an art club newsletter and, oh yeah, #$%^# federal, state and local income taxes!
I still hope to get it done by April 28th. I am glad to see Jim's suggestions, as I had already tentatively settled on about a 90º angle of view or six inch film to pinhole spacing. (Great minds think alike, etc., etc.) I was quite happy with a fairly wide 4x5 I did two years ago and look forward to seeing the even larger format in action. I'll probably go with paper negatives this time, as I don't want to give up a month of Starbuck's visits to buy film that size!