Boards
The end of Polaroid film
http://news.bbc.co.uk/1/hi/business/7236106.stm
Digital just isn't the same. I never actually had one and I know they were about a pound per picture but they were cool and had character.
They do always make me think of my friend though who took a series of shots of his girlfriend's fanny and various acts and left them in his room. A few of us were round there one day and found the offending photos and they went around school pretty quickly. Quite harsh in retrospect.