Element 19 K (Potassium)
Potassium is an essential mineral that is needed by all tissues in the body. It is sometimes referred to as an electrolyte because it carries a small electrical charge that activates various cell and nerve functions. Potassium is found naturally in many foods and as a supplement. -Google web.
Since potassium is found in quite a few fruit and veges, it is in its home with all the other fruit and vegetables here. no need to go on private property. You are looking for a small snap lock container with the geocaching logo. No need to bring your own pen since is already one in there, room for some pretty small swaps. No need to go on private property.