Abstract: Consumers of tobacco products or pharmaceuticals are known to carry such on their person in containers to protect the product in their pocket or purse and so that the product is available as needed. A container in which two containers are selectively coupled together is disclosed. In some embodiments, a first, larger container contains fresh product while the second, smaller container contains partially-consumed product. Or in some cases, the smaller container is used to hand off a small amount of the product (tobacco or the pharmaceutical) to another person, e.g., a caregiver attending to a patient. The approaches disclosed herein to couple the two containers include: snap fit, magnetic coupling, and a sliding groove/ridge fit.