Misti, thanks for the explanation. I didn't get it (duh!)
bandylu, they had several different brands at the bazaar where I was, even Pepsi (that would be the one for me). I'm not even sure what kind my son drinks, so I picked out Red Dog (sounds more redneck than the others). The people who were selling them were local. I don't know if a lot of people do these or not. I guess the only way to find out about your area is to check around with your friends and see if they know of anyone who does. I'm sure they could use any kind of can. Of course, it's best if they're empty so someone would have to have a little party or something first.