The Polaroid instant cameras were great. They had (some of) the immediacy of digital cameras, as well as the "artifact" character...each print was one of a kind and cannot be reproduced. Like many film stocks, there is also something unique to the "format" of the print as well, possessing a white frame of thick-ish plastic paper:
(from IMPOSSIBLE Project website)Take a picture and "click-vwhirrr" out pops a print. Now these take time to develop. There was a ritual of flapping the picture around, but that wasn't necessary with post-1970s models and stock. In fact, the best thing to do is put it in your pocket right away, and wait about four minutes.
About a year ago, I picked up a model 600 camera in a thrift store for $5. The kind that flips open. I really like the design:

This is an older model in the line. I'm not sure about technical differences, but I sure like how this one looks! It's black with a little rainbow accent, and lots of corners. My girlfriend said I shouldn't buy it since I wouldn't be able to get the film any more. Polaroid ceased production in 2008, and made what they projected to be enough to last through 2009. (I learned that recently. I thought they had stopped around 2002!)
But I held fast, and sure enough, someone has taken over Polaroid's original factory, licensed their tech, and is making new stock. I just ordered one film pack the other day to test. I haven't used it yet, as it cost $27 and contains only eight exposures. Quite precious! I must use them carefully! But I look forward to it, it will be fun.