Suitcase
The humble suitcase, also called a briefcase by some, is one of the average citizen's items that he/she starts off with. Besides storage, it's also useful in HL2RP because of it's distinct ability to be broken down into cloth via the crafting menu, and is sought after by many resistance members because of this.
Usually Suitcase don't really serve a purpose outside of minging they are only used to be held on a Playermodel.
For minging however, if the player stacks two suitcases ontop of eachother and presses Mouse2 with the hands equipped to grab the bottom suitcase, they can commit a rudimentary form of propsurfing.