User configurable wearable devices are discussed herein. Some embodiments may include a wearable device including a flexible band having an outer surface. The flexible band may be formed into a loop and worn on a user or an object. A plurality of male interface components may be disposed on the outer surface. Each male interface component may comprise a protrusion dimensioned to be capable of insertion within a female interface component of an object, such as a building block, to mechanically attach the object with the flexible band. In some embodiments, each of the male interface components may be separated from each other by at least a common or standard distance, such as the distance defined between two adjacent female interface components of the object. Furthermore, adjacent male interface components may be separated by the standard distance for interfacing with adjacent female interface components of an object.