Unless you have a group that includes two doctors (a doctor cannot operate on himself), two dentists (a dentist can't fill his own teeth), a nurse, a pharmacist, and a herbalist, as well as the teens to act as apprentices, you will need to provide some things in the future for you and your family or mutual aid group through the outside world of your homestead. Your paper dollars will be worthless as will all of your bank accounts and paper investments. It will be some time before silver and gold would become an accepted method of trade and most non-preppers will not have silver or gold or may be leery of accepting it. You and I will need a form of trade or bartering to obtain the needed items or services or to increase your future silver and gold holdings long term.
Below are some of the items that I believe will be in high demand post SHTF. With a little forethought and planning, you can decide on a single area or single item or mutable areas or items that you and your family can and will want to produce and start stocking the necessary equipment and supplies. You should also begin gaining the necessary experience to produce these items now.