Placing geocaches in locations without permission, where permission is needed: There is nothing more embarrassing than when GC.com is contacted by a landowner because someone placed a geocache on their property without permission. Think of the impact of your placing a cache near someone’s home, then cachers come in search of it and the property owner has no idea why all these strange people are showing up on their property in search of the cache.
You are looking for a bison tube.