Most products are not packaged for long term storage. Wheat, beans, and rice come packed in paper feed bags or boxes and will need to be repackaged for use six month or more from now. For short term, within a year or so, we recommend high density polyethylene buckets and snap on lids from your local hardware store. There will be a triangle on the bottom with a 2 and the initials HDPE.
For longer term storage, you should invest in mylar foil bags and oxygen absorbers. The co-op has had good experiences with the folks at Sorbent Systems. This page has a chart to assist you in choosing the proper sized O2 absorber for your needs, along with videos and supplies for your long term storage needs.