Golden tablets with the seal of the ruler that issued the pass and the seal and name of who it was issued to. About the size of your palm of solid intricately etched gold. The holder of the tablet is backed by the authority of the king to make any required purchases on credit or enter any place they deem necessary. A very powerful token indeed.
A race of halflings has lived so long underground that their skin has taken on the color and texture of cauliflower, they are called the Cauliflower or the Mushroom People for their skin and aversion to light.