Well, I don't know how to name this theme. The thing is, today while packing and unpacking stuff and I remembered one old story from Lithuanian underground that happened some 20 years ago or so. There were two bands - black and death metal. Black/thrash metal one some of you might probably know, it's Dissimulation -
http://www.youtube.com/watch?v=_esn4iccl8o. The other one is still without any release so the name is not important cause it's mostly unknown. The more interesting thing is that these bands were always conflicting and it was quite difficult even to have them on one bill. They are not that friendly nowadays too. The reason for conflict was mostly ideologic.
So death metal band just one time sent to black metallists toilet paper that was just used. well, shit and so on. This has got even more intense after some fights like "don't send me your shitty toilet paper" : "Fuck you you black metal faggot" and fists went into action. But sort of communication by exchanging shitty used toilet papers continued for a few years while people became bored with that.
Other thing was when I started receiving slices of cheese from a band here in Lithuania. They lived in a different city and I've got a dozen or more letters with one slice of cheese because once drunk I talked about how cheese is very good with beer, etc. This was not the conflict, but it was just interesting to get that years ago. It's a pity I've stopped receiving these cheeses because of lack of communication from my side...
I know that people were exchanging goodies more frequently in earlier years and now it's enough to whine somewhere on the internet, but these sort of intentionally absurd or hateful things are always something to remember and to share. Perhaps that shitty paper or cheese could be called mail-art, but I doubt that. If you have something to share - write here. It would be interesting to read.