One of the funny gaming superstitions/traditions that I have encountered is the "Blue Dice of Shame". Originally thought to be something we did in our group alone, I began to encounter this tradition in other gaming groups removed from our own. These encounters occurred at conventions and games stores and I began to wonder how this happened.
For us, the Blue Dice of Shame were a set of tattered, light blue, casino-style D6s. They were chipped, rolled funky and generally the unwanted bastard children of somebody's dice collection, likely picked up sometime back when they scavenged dice for their early gaming experiences. They were most often assigned to players unfortunate enough to forget their own dice when coming to the table. This sort of hazing encouraged mindfulness and provided a sort of bonding ritual for us guys. The blue dice could also be sentenced upon somebody for some sort of gaming misstep (forgetting snacks, being late, forgetting to wash for the third day in a row, etc.).
I am curious if anyone else out there has Blue Dice of Shame or other table traditions they would like to share.