Pants of the Revolution
From KGB Wiki
During a movie night in the year 2001, members of KGB found a pair of pants lying in the West Wing TV Room. As is KGB custom, the members who found the pants arranged to have them put in the Kage for future use.
During Booth of that year, members nailed the pants to the cross. The pants were featured prominantly during build week, and have made appearances during build weeks of subsequent years.