Abstract: A convertible activity backpack can include a shoulder harness, at least one storage compartment for storing items, and an activity platform. The convertible activity backpack can be configured in an on-back state and in an activity state. When in the on-back state, the convertible activity backpack can be designed to be worn over at least one shoulder with the at least one storage compartment positioned on a back of a wearer and the activity platform is hidden. When configured in the activity state, the convertible activity backpack is designed to be supported and the activity platform exposed so that the activity platform is usable as a supporting surface that is approximately horizontal.