A rotatable core is described. The core includes a cylindrically-shaped housing having an indentation area. The indentation area is formed to guide a user where to place their finger for launching, such that by pressing down on the indentation area, the core is forced against a ground surface, which causes it to spin away from the user. Additionally, the core includes a housing with a cavity therein for receiving the object. A release mechanism is attached with the housing. The release mechanism includes a connector for connecting with a corresponding connector on the object and an expelling mechanism for expelling the object. Upon activation of the release mechanism, the connector releases the object and the expelling mechanism forces the object from the housing.