Travel Bugs are tags used for items that “hitchhike” between geocaches. They are attached to items that people find in a cache and are intended to be transported to the next cache that the finder visits. This is essentially an asynchronous ad-hoc routing protocol for objects. It would be interesting to describe a desired destination for the Travel Bug, thereby enlisting each finder as an attempt to get closer to the destination. This would a kind of warped version of how an electronic packet might travel in distance-vector routing.