A backpack recipe

[bjklein89]

I was wondering if it is at all possible to create a recipe using a krampus sack, piggyback or insulated pack as one of the materials with the backpack skins. A lot of players, including myself enjoy using the backpack skins, but I invariably end up obtaining a krampus sack. I do not want to simply modify the number of slots on a regular backpack like many other servers do, I would rather players have to gather items like anything else and craft an upgraded backpack.